Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc5199820fb71f51…

MALICIOUS

PDF

91.2 KB Created: 2021-07-31 03:58:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 4b64fd99fb50c4399a4a4c586345cb59 SHA-1: 427ef65d310e26aa93bdc6daa0ec77388c294bf3 SHA-256: cc5199820fb71f51051e74d3e64f1a5fe5336af41ce566027a8c44d9733f8f7f
236 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document exhibits characteristics of an advance-fee scam and payment redirection lure, as indicated by heuristics and the presence of numerous links to potentially compromised websites. The document's structure suggests it is designed to trick users into believing they are claiming a prize or updating payment details, leading them to malicious URLs. While no scripts were directly extracted, the PDF format itself can embed malicious JavaScript, and the overall pattern points towards exploitation for client execution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9913

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://medvor.ru/uplcv?utm_term=how+to+claim+a+winning+lottery+ticket+in+texas PDF link annotation
    • http://brenna-ski.pl/userfiles/file/liwalilavivumedebafigus.pdfIn PDF document text
    • http://sanzmendia.com/userfiles/files/jiruropomotugofalobome.pdfIn PDF document text
    • http://www.sg-callenberg.de/wp-content/plugins/formcraft/file-upload/server/content/files/16072998335cef---lexipiwu.pdfIn PDF document text
    • http://arcdesantmarti.com/biocop/Images/images-editor/file/ralisoxise.pdfIn PDF document text
    • https://cfacgroup.com/uploads/FCK_files/file/43264430877.pdfIn PDF document text
    • https://www.davidcosz.de/wp-content/plugins/super-forms/uploads/php/files/tab936f6k63veq1o4aef2k9144/29745085335.pdfIn PDF document text
    • https://www.guestquesttravelmedia.com/wp-content/plugins/super-forms/uploads/php/files/k0fgp53guf87dr4ud2fekqj2vv/85979040542.pdfIn PDF document text
    • https://gulf-rope.com/images/bulk_images/files/nizolukugi.pdfIn PDF document text
    • https://svetplus.com/userfiles/files/puturabopaxenatege.pdfIn PDF document text
    • https://genesisbehaviorcenter.com/wp-content/plugins/super-forms/uploads/php/files/00560652762f53e7ab567974e0a08627/kewizoketaxelaguwegotos.pdfIn PDF document text
    • https://action-roofing.com/wp-content/plugins/super-forms/uploads/php/files/eabd44796c8ccee635a9b56b1ee725d6/78174489184.pdfIn PDF document text
    • http://iideree.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a466ee76bcd---17683516319.pdfIn PDF document text
    • http://churchliferesources.org/wp-content/plugins/formcraft/file-upload/server/content/files/16094599f9b6cc---94262698775.pdfIn PDF document text
    • https://fsbulletsandbrass.com/userfiles/files/9946326003.pdfIn PDF document text
    • http://axiomestates.com/userfiles/file/48239600545.pdfIn PDF document text
    • https://www.lightingsolutionsal.com/wp-content/plugins/super-forms/uploads/php/files/b9eadfe3833da85990fefc633ae21a17/kudafijofefapuzu.pdfIn PDF document text
    • http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/o6ah8mmg14uoht8q6ptj52t2os/lujukole.pdfIn PDF document text
    • https://awlights.com/wp-content/plugins/super-forms/uploads/php/files/63757bc28e301793791832dfd0c4d727/pezisiw.pdfIn PDF document text
    • http://boek.se/bilder_umeny/File/tamerevotebo.pdfIn PDF document text
    • http://www.assignproject.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609256384bd4d---14294398748.pdfIn PDF document text
    • http://allycatering.com/userfiles/73096579138.pdfIn PDF document text
    • https://ka-base.no/images_content/file/29867551564.pdfIn PDF document text
    • http://modernplating.com/userfiles/file/vusaxojopaxixazolud.pdfIn PDF document text
    • http://lisahyatthealth.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b20f56d293f---jagepefenegozoligiforo.pdfIn PDF document text
    • http://kystop.com/wp-content/plugins/super-forms/uploads/php/files/s0dn7to7165u1a68du0ivlb140/52823598285.pdfIn PDF document text
    • https://beribuket.ru/wp-content/plugins/super-forms/uploads/php/files/b05331f80d147a769035c25e6672ff70/19172846553.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fd6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD6E 10956 bytes
SHA-256: c185b0918141007bc91e41364fa9f115f32bc651b9984a3f9618cbf676763fba
font_01_sfnt_off000116e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116E0 17632 bytes
SHA-256: 092220bce1a1ab66bebdd6e6eb057b0998d25f6b3d8f27e603c59626eb0d3784
font_02_sfnt_off000144f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x144F9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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