Malicious PDF — malware analysis report

Static analysis result for SHA-256 0dde3a1fb7e74680…

MALICIOUS

PDF

87.7 KB Created: 2021-06-29 21:31:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 1e43dac263a6ce63574ddd11cbdcb5e8 SHA-1: c197838bfa666f7a1f135194a9736a86968ffb31 SHA-256: 0dde3a1fb7e7468013f7f9fa15599d910f6b884a480ef0674ba926af5231e73f
216 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and ClamAV. It contains numerous links pointing to compromised WordPress sites, suggesting a link farm designed to redirect users. The heuristics indicate a 'Payment redirection / bank-detail change lure' and a 'Callback phishing phone lure', pointing towards a phishing or business email compromise attack. No scripts were extracted, but the embedded URLs are the primary indicators of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://smidgel.ru/uplcv?utm_term=change+app+store+country PDF link annotation
    • http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cb0a82a232---gukukufulupokav.pdfIn PDF document text
    • https://www.kunapak.com/wp-content/plugins/super-forms/uploads/php/files/8ma1luijme4cq1ljnlo42ehtlp/mugegugotukafefevu.pdfIn PDF document text
    • https://eclipsetheaters.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d073be61733---99884093018.pdfIn PDF document text
    • https://jambukuning.com/contents//files/87026739826.pdfIn PDF document text
    • http://scuderieverdina.it/scuderia/userfiles/file/jaxifix.pdfIn PDF document text
    • https://cornerstonelaw.eu/userfiles//file/komisegulineriguxole.pdfIn PDF document text
    • http://vom-ragnaroek.de/uploads/file/18055396694.pdfIn PDF document text
    • https://cvconstructionsgoa.com/pharma/admin/userfiles/file/28034499.pdfIn PDF document text
    • http://botanicgardenscafe.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607b04eae7813---30199968516.pdfIn PDF document text
    • https://www.rekalibracija.com/wp-content/plugins/super-forms/uploads/php/files/03d8236b467e2871a67f9cbfcd2a28d0/gokuwolek.pdfIn PDF document text
    • http://rogo-rotterdam.nl/files/tugoviwekekamebapolowi.pdfIn PDF document text
    • http://www.driftime.ee/wp-content/plugins/formcraft/file-upload/server/content/files/1609f6b1712b2d---xugefudipivosaxomexafi.pdfIn PDF document text
    • http://daiichibus.vn/uploads/news_file/65179696975.pdfIn PDF document text
    • https://kindeeyudee.com/ck_files/files/15687715509.pdfIn PDF document text
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a869b45f050---dadadoguposesonas.pdfIn PDF document text
    • https://spherule.org/wp-content/plugins/super-forms/uploads/php/files/72b98506b3ff6011b19ca42069581a57/kapox.pdfIn PDF document text
    • https://carpanea.it/wp-content/plugins/super-forms/uploads/php/files/bc85826db2acab80a91ceae5570b1782/vamodaguzutibumawokanide.pdfIn PDF document text
    • https://best-turbos.com/wp-content/plugins/super-forms/uploads/php/files/15ae3582d54be9406cb7e8e257b7bbec/zipunemigi.pdfIn PDF document text
    • http://coinmarketsuite.com/ckfinder/userfiles/files/53547633431.pdfIn PDF document text
    • http://workprohealth.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072a86e5dac0---lefavakegirir.pdfIn PDF document text
    • https://alcc.vn/wp-content/plugins/super-forms/uploads/php/files/qgmab4m0gm76r1t82agg82tq2q/52250421077.pdfIn PDF document text
    • http://www.sevenchurchestour.net/seven/wp-content/plugins/formcraft/file-upload/server/content/files/160c4a23ed1a7d---kovodefuk.pdfIn PDF document text
    • http://osc-pribor.ru/products_pictures/file/zuvuwa.pdfIn PDF document text
    • https://moniimpex.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ce47c73cebc---77584689052.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f36e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF36E 10760 bytes
SHA-256: fcd741208941eea970e3cc51ab1a11e241f52bcd47bc3bf68e0c7cb3ab05e2bd
font_01_sfnt_off00010c3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C3A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001244c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1244C 17256 bytes
SHA-256: e9db1c6d3d28eaa81ba1a00c1280ecfbc9fb1f1b66dd51fac02387433b030d2c

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