Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8b2d0afb3176424…

MALICIOUS

PDF

300.4 KB Created: 2021-03-19 11:42:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8c238261050535053f6dc5ed540bb0ac SHA-1: d09485b5a97a091b2f5b08532e4e37249f134dac SHA-256: e8b2d0afb3176424ad4b345645b78e880af2efd16cd197286324c3f3536135c3
156 Risk Score

Malware Insights

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

The PDF document contains heuristics indicating it is a phishing lure, specifically using an SEO redirector to disguise a malicious link. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were directly extracted, the presence of external URIs and the nature of the heuristics point towards a phishing or malware distribution attempt, likely initiated via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9695

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://mezovuduw.ru/award?keyword=bharat+acharya+8086+book+pdf PDF link annotation
    • http://pochta-24.cc/philips_norelco_multigroom_5000_walmartpbhh0.pdfIn PDF document text
    • http://tb-films.ru/star_trek_starship_models_for_sale671oj.pdfIn PDF document text
    • http://dimax-matrasy.ru/duzavotubijuzenuloloziwbtwiw.pdfIn PDF document text
    • http://otomail.business/41318716645bcie8.pdfIn PDF document text
    • http://devgm.design/6801639959by68v.pdfIn PDF document text
    • https://s3.amazonaws.com/sefepugolupalax/niteruj.pdfIn PDF document text
    • http://123dutch.com/detevunomupubiwodukegakr6w16.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaporam/lakave.pdfIn PDF document text
    • http://portkamesto.site/exploration_and_colonization_study_guidemqnep.pdfIn PDF document text
    • http://hopecommunitynaz.com/apod._nasa._gov_scale_of_the_universejv58c.pdfIn PDF document text
    • http://yesnutural.space/57387714572zrjqu.pdfIn PDF document text
    • http://pixell.store/appalachian_trail_guide_central_virginiav4psg.pdfIn PDF document text
    • https://s3.amazonaws.com/fatikonavori/rizigaxuvojenefodigenopi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://f3dcd8e3-6656-4b47-a81e-a993d3c4f2a1.filesusr.com/ugd/aa9ef2_a81713ae386b4ff097e1eefd6e616ff6.pdf?index=trueIn PDF document text
    • https://288c7b4b-0494-48f6-8ee2-9dd519b96b0a.filesusr.com/ugd/a107db_8655d40e72b14e7cacd56b358537c452.pdf?index=trueIn PDF document text
    • http://fajufavutipo.epizy.com/7229972306.pdfIn PDF document text
    • http://bobakazof.epizy.com/kogeka.pdfIn PDF document text
    • https://57fc24c6-ba7c-430a-bdae-05304608b610.filesusr.com/ugd/bc9c68_3574bb802dd64d339e46b338c6ed2c23.pdf?index=trueIn PDF document text
    • https://4f0754e2-f0c4-47db-826b-83042027646c.filesusr.com/ugd/7a11b0_d1c549db764b4a9e8eab4f665dd83012.pdf?index=trueIn 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://scripts.sil.org/OFLIn 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_off000448cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x448CC 5876 bytes
SHA-256: 7fa2701d782663489a721cb9a0135f85572bf779c796889117059407b205b6f4
font_01_sfnt_off00045cca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x45CCA 14284 bytes
SHA-256: c0a9087d60a3870e44bdccc8e514358d2e1d9f542c1d8bccdeea6dea918de475
font_02_sfnt_off00048c6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48C6D 16088 bytes
SHA-256: 7b61b80ad9eae8da687db589656cc14036b78b470666db3a00a61726a6371a4d