Malicious PDF — malware analysis report

Static analysis result for SHA-256 a87725a114eee3e0…

MALICIOUS

PDF

87.8 KB Created: 2021-07-01 23:13:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: fbaf214406910fa94c8c06eadb4fdcb4 SHA-1: 9c1872a01115805356400932ed42e6db0dc15047 SHA-256: a87725a114eee3e009a4c4073f2969a55de4c7a2ea13f0f7a7b6fed17fdc54d2
204 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to potentially compromised WordPress sites, indicating a link farm designed to host malicious content. The heuristic 'SE_PAYMENT_REDIRECT_LURE' strongly suggests the document's content is designed to trick users into believing there are new payment instructions, a common tactic for business email compromise. While no scripts were extracted, the presence of numerous embedded URLs and the ML classifier's high confidence score point towards a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://3dreamvr.com/wp-content/plugins/super-forms/uploads/php/files/e776f9182194223a48d23ab2631af24d/45308947234.pdf In PDF document text
    • https://yourtuscanyguide.com/wp-content/plugins/super-forms/uploads/php/files/gt235jo0kos03d5a5idu38mq62/52718156871.pdfIn PDF document text
    • https://moveo-sport.pl/userfiles/file/91542265263.pdfIn PDF document text
    • http://e-sportis.com/images/upload/kolulul.pdfIn PDF document text
    • https://fallsplat.se/file/poresadobemosevez.pdfIn PDF document text
    • http://historia-bfured.hu/userfiles/file/14109974973.pdfIn PDF document text
    • https://rmissio.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16082623f2efbc---bukizesizowolusukanimara.pdfIn PDF document text
    • http://ajtoablakcentrum.com/_user/file/33951286062.pdfIn PDF document text
    • http://jockmurray.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d472349c3b---ravowibakipobolibaresuve.pdfIn PDF document text
    • http://trlgpc.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/94798693510.pdfIn PDF document text
    • https://designcoordinators.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083c5872fef4---60185317875.pdfIn PDF document text
    • https://dolupin.com/calisma2/files/uploads/firovixexafet.pdfIn PDF document text
    • http://deurwater.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cc955620d1---videsorovinu.pdfIn PDF document text
    • http://leoclubmarsala.it/userfiles/files/4892315773.pdfIn PDF document text
    • http://anneadamslaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/zesofaleso.pdfIn PDF document text
    • https://parklanehotel.asia/userfiles/file/13892481919.pdfIn PDF document text
    • https://www.18fire.com/wp-content/plugins/super-forms/uploads/php/files/0b34c4da153f4319489bf0fc1f5933ae/48299534814.pdfIn PDF document text
    • https://www.formwork.co.uk/wp-content/plugins/super-forms/uploads/php/files/c5qdou4o4j6fo7k5ef9dq079ok/sevaginatoxebagetizufi.pdfIn PDF document text
    • https://zazilha.com.mx/wp-content/plugins/super-forms/uploads/php/files/6202c06e43e8a172ad7e057fff4aa24f/27910936061.pdfIn PDF document text
    • http://skuplaptop.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160c86884de9fd---vusubidugikegupugiraxu.pdfIn PDF document text
    • http://automotiveenergy.cz/userfiles/file/16899649196.pdfIn PDF document text
    • https://sport-jicin.cz/dokumenty/47592561943.pdfIn PDF document text
    • http://bajcsidavidfoto.com/_user/file/34531262645.pdfIn PDF document text
    • https://www.idromeccanicasrl.com/idromeccanicasrl.com/wp-content/plugins/super-forms/uploads/php/files/372f2403a4093ee9a3a9623e034142b0/bagumibonazepow.pdfIn PDF document text
    • http://beautybybelief.com/admin/images/file/tametimexegovuko.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=new+year+timerPDF 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_off0000f68a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF68A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010ea1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EA1 10008 bytes
SHA-256: 4544f52dfc7b20b8bdbeb23fdfc1c89c5b6fae21719fbac31a2326f0e1a26574
font_02_sfnt_off000124eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124EB 17244 bytes
SHA-256: db192b1de9b1fb9c9608743197f8d326d700033d2f9f386b1743dfb6487ee540

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