Malicious PDF — malware analysis report

Static analysis result for SHA-256 9eaf11b77e0a965b…

MALICIOUS

PDF

84.8 KB Created: 2021-09-16 10:12:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: d7662d3b951db9b747cc8f9873659545 SHA-1: 8a87f3ee34b12685b2fe51760c239660e2904718 SHA-256: 9eaf11b77e0a965bfb8d2e93199ad2c78eee0ac49c859d47588ac9d5c39ba53e
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains multiple links pointing to compromised WordPress upload storage and other disposable hosting, indicative of a link farm designed to obscure the true destination. The heuristic 'SE_PAYMENT_REDIRECT_LURE' strongly suggests the intent is to trick users into believing there are new payment instructions, a common tactic in business email compromise scams. While no scripts were explicitly extracted, the PDF structure and link farm behavior are consistent with malicious PDF documents.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://arihantgranites.in/wp-content/plugins/super-forms/uploads/php/files/f822d45255e4324b2e06dbee42911c42/rimufefopurod.pdf In PDF document text
    • http://www.patriarca-batiment.com/ressource/site-image/files/kevonotomopawosam.pdfIn PDF document text
    • http://www.ibadirect.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613b6d9bd98b6---14275157770.pdfIn PDF document text
    • https://gamedunyasi.com/calisma2/files/uploads/bojavefoga.pdfIn PDF document text
    • https://sim2007.com/files/88889560613.pdfIn PDF document text
    • http://bantinnhadat.com/users/files/19974142051.pdfIn PDF document text
    • http://sattosushi.com/uploads/files/58744682348.pdfIn PDF document text
    • http://www.emporiocaritaspisa.it/wordpress/wp-content/plugins/formcraft/file-upload/server/content/files/1613971f54aeb4---zazutew.pdfIn PDF document text
    • http://sevenseahotel.com/uploads/images/files/78041420905.pdfIn PDF document text
    • http://feach.ie/images/uploads/file/dameperogavuvomapezuw.pdfIn PDF document text
    • http://greddy.com/admin/common/ckfinder/userfiles/File/9728339918.pdfIn PDF document text
    • http://businessplan-capalpha.eu/mbp/upload/images/images/upload/ckfinder/44997365466.pdfIn PDF document text
    • https://unitjaya.com/contents/files/vabobarubi.pdfIn PDF document text
    • http://dongduong.net/Images_upload/files/duxesewukisemokudubatufuk.pdfIn PDF document text
    • http://www.auditsi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613252a21d1a3---98113299957.pdfIn PDF document text
    • http://lse.hu/userfiles/file/takuzikoxipo.pdfIn PDF document text
    • http://yongchengtech.com/uploads/files/202109030930029966.pdfIn PDF document text
    • https://fatheragneliti.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613cb6e7cb3f8---wofudaposefexa.pdfIn PDF document text
    • https://nirmalujjwal.com/public/ckfinder/userfiles/files/ruxemev.pdfIn PDF document text
    • https://bhsbeacon.com/FCKeditor/file/54663934918.pdfIn PDF document text
    • https://trucraftsmanship.com/wp-content/plugins/formcraft/file-upload/server/content/files/16130fff3bd27c---53557146758.pdfIn PDF document text
    • http://emilybarnes.com/DEVELOPMENT/VERSIONED/emilybarnes/trunk/sites/default/files/file/lejogifazelifajamokifumug.pdfIn PDF document text
    • https://faktxeber.ru/resimler/files/bekipilapowo.pdfIn PDF document text
    • http://parfumerieindex.nl/images/uploads/64030862796.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=farm+frenzy+free+mod+apkPDF link annotation
    • 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_off0000e02a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE02A 19900 bytes
SHA-256: 38f072a3195c374490756a2feb3030fbf8217903d48332034fcd9b5102cfbb04
font_01_sfnt_off0001159e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1159E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012db5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12DB5 10496 bytes
SHA-256: b393b8f34f1fdfe7d3b11573a38a450b3ceffc6b70f669300ab5a26e3591ad1e

Open this report in the interactive analyzer, or submit your own file for analysis.