Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b85b40e053b4077…

MALICIOUS

PDF

84.2 KB Created: 2021-09-02 05:37:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: fc90ae5ef1d3ac626b827cc96de443d3 SHA-1: 9d35bb75586e1211835d14cb9a466cfbb5b0a1be SHA-256: 7b85b40e053b40777e9803f1c1553539ec941c0799c4a738a33f25add4711ede
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are hosted on compromised CMS platforms or appear to be part of a link farm. The 'SE_CALLBACK_LURE' heuristic indicates the document is designed to trick users into calling a phone number for fraudulent purposes. While no scripts were explicitly extracted, the ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or social engineering.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9983

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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) 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 http://bagodilovaspark.hu/userfiles/file/55027580694.pdf In PDF document text
    • https://micast.de/wp-content/plugins/super-forms/uploads/php/files/db6dumu5qtukig36buf6rk8ufj/kefinuwibajisiludetazij.pdfIn PDF document text
    • http://bertrandetgastineaudesigners.com/userfiles/file/fuxuloxupekegukakewew.pdfIn PDF document text
    • https://stdtekstil.com/upload/ckfinder/files/matedamel.pdfIn PDF document text
    • http://robbes.nl/media/files/9105546755.pdfIn PDF document text
    • https://www.advids.co/wp-content/plugins/formcraft/file-upload/server/content/files/160a37b6fd4a6b---54723562208.pdfIn PDF document text
    • http://rgjbreunion.com/clients/6/69/6950e03db8b1ea894755b369f0a03c31/File/sugufupif.pdfIn PDF document text
    • http://lookupagency.es/wp-content/plugins/formcraft/file-upload/server/content/files/160a46defcf290---lobonel.pdfIn PDF document text
    • https://facades-metal.ch/ckfinder/userfiles/files/zudapuzozefenite.pdfIn PDF document text
    • https://kantankacreative.com/wp-content/plugins/super-forms/uploads/php/files/dca9f7aa3532065838bd44396349e767/49641861419.pdfIn PDF document text
    • http://dmn.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160717ab40412b---48291492263.pdfIn PDF document text
    • https://assurancemauricie.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f4b9ba7636e---liluxedat.pdfIn PDF document text
    • https://www.peeryhotel.com/wp-content/plugins/super-forms/uploads/php/files/fa0403d9290299d2c10cce225ca85cdd/mariketowuv.pdfIn PDF document text
    • http://alothongtin.com/upload/FCK/file/79162477009.pdfIn PDF document text
    • https://aathichudi.org/userfiles/file/70612650114.pdfIn PDF document text
    • http://www.korayozelguvenlik.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f06831f2783---belotedojutigazinegoxepi.pdfIn PDF document text
    • http://xn--80aagkbrca3apkgkee0a1bi.xn--p1ai/ckfinder/userfiles/files/magejajogagezik.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16123afcd86146---91122004725.pdfIn PDF document text
    • http://www.web-globus.de/ckfinder/userfiles/files/77113453881.pdfIn PDF document text
    • https://eijo.in/ckfinder/userfiles/files/dexazala.pdfIn PDF document text
    • http://rkmaster.ru/uploads/files/nifupexuko.pdfIn PDF document text
    • http://rheumatology.instituteupload/content/file/65126043497.pdfIn PDF document text
    • https://istanajpdua.com/contents//files/nugazo.pdfIn PDF document text
    • http://www.onegelha.com/wp-content/plugins/super-forms/uploads/php/files/4345ff7c5b172606a98397ae95c64064/89303493739.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=nonprofit+functional+expensesPDF 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

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_off0000e3ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3CE 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fbe5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBE5 10652 bytes
SHA-256: baa14a287d14419075e3c168ca7f4fde55e3bc10d474d529de7cd6d0d5439b7e
font_02_sfnt_off0001146f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1146F 17872 bytes
SHA-256: 010c9986c2666f0ce634f082b6d4909bb8a9df24bfe98aa52ecac722aa5026b5

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