Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e9a989fadc1b05a…

MALICIOUS

PDF

94.0 KB Created: 2021-06-05 07:36:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 64a7afc60c7681066fa9210a4fb991e6 SHA-1: 3f77fbd1f6fc12ba58cb2e2d6ba3cd4c8265c8a6 SHA-256: 5e9a989fadc1b05a42f9c0e01bdd0b0d11de3b5d65114320218f3658a3ea941a
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous links, many pointing to compromised WordPress sites and disposable hosting, suggesting a link farm designed to redirect users to malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with a malicious document designed to exploit user trust.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • 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://garglob.ru/uplcv?utm_term=food+and+beverage+server+interview+questions+and+answers
    • https://www.pennlighting.com/wp-content/plugins/super-forms/uploads/php/files/828ff14c00e27120aaec13ef32ba5f93/90011567534.pdf
    • https://hostingalani.com/calisma2/files/uploads/10769063310.pdf
    • https://lightupalife.org.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1608ccf1e661b8---92186430670.pdf
    • https://festivalecolo.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1609b7d4f9fda1---9429842867.pdf
    • http://www.julitolaschools.com/wp-content/plugins/formcraft/file-upload/server/content/files/160925ae172584---xurokezilowak.pdf
    • https://binhruamuinanobac.com/wp-content/plugins/super-forms/uploads/php/files/krevstf8qsijk9e9kb56g1tcir/dajowivepaposijisivoli.pdf
    • https://laneopx.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a170fc5bd6a---18832567786.pdf
    • http://pvsystexperts.com/wp-content/plugins/super-forms/uploads/php/files/99ijv552h5fjaenun4d8v37115/jorimisujaku.pdf
    • https://riverasphotovideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607563ac450e8---45538285309.pdf
    • https://www.beadvised.co.uk/wp-content/plugins/super-forms/uploads/php/files/30475dd546f94a6d8fa0f4579f588c3f/fejatojup.pdf
    • http://www.carolglassman.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bacc4cbf26c---4615498869.pdf
    • http://clearlakesd.org/wp-content/plugins/formcraft/file-upload/server/content/files/160987855df51a---60030029717.pdf
    • https://blueridgelightingandcontrols.com/wp-content/plugins/super-forms/uploads/php/files/eba7a553145cf3a411fd7c8af17d1d45/20634349665.pdf
    • https://grahampropertytax.com/wp-content/plugins/super-forms/uploads/php/files/a938d44b82ab70344938f77bd0702787/vamit.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012635.bin
469d43f52b5472882bdd122002427a966f65c2e216c8ee576093c02c536b0dc1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12635 5332 bytes
font_01_sfnt_off0001386d.bin
13ca7ae5513fc17bb6a3522733333e5826801c81b823bd279e3eafc153986b70		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1386D 1912 bytes
font_02_sfnt_off000141a4.bin
95f5e4541979edb469914e5433ffe39ff2b0df4fb5acfc1532757e6610e86786		 pdf-font-stream PDF embedded font (sfnt) at offset 0x141A4 12860 bytes

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