Malicious PDF — malware analysis report

Static analysis result for SHA-256 e96dc62b8440229e…

MALICIOUS

PDF

85.7 KB Created: 2021-02-13 23:49:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 68b80394fde4aaa4e1df570a2a823c8c SHA-1: f3404cb74afaa70ce6ab513904ca6d5d3f6338ba SHA-256: e96dc62b8440229e7c5954ee28ed9b6a185930ae14444b9ce343b6b25ec23710
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing operation. While no scripts were explicitly extracted, the PDF structure and embedded URIs point towards techniques used to redirect users to potentially harmful websites, possibly for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://crophysi.ru/wb?keyword=i%20like%20it%20debarge%20sheet%20music PDF link annotation
    • https://betivaronapan.weebly.com/uploads/1/3/5/3/135350750/b55536c9.pdfIn PDF document text
    • http://xruhdfo.site/bowutidisopuxutokerirokox79hih.pdfIn PDF document text
    • https://cdn.sqhk.co/werutojij/blhaEe1/64774538074.pdfIn PDF document text
    • https://fisadurubimu.weebly.com/uploads/1/3/1/4/131409264/magitaneweru.pdfIn PDF document text
    • http://sacredname.ru/paper_origami_fortune_teller_templatetjt6b.pdfIn PDF document text
    • https://wezobugedelu.weebly.com/uploads/1/3/1/8/131856743/5648761.pdfIn PDF document text
    • https://lepekogiba.weebly.com/uploads/1/3/1/6/131637498/xofaz.pdfIn PDF document text
    • http://creditreportus.info/bulbul_nest_information_in_marathiz82rd.pdfIn PDF document text
    • https://tevupiju.weebly.com/uploads/1/3/4/8/134865653/6875290.pdfIn PDF document text
    • https://jubigugatuse.weebly.com/uploads/1/3/0/7/130775741/zuvegaw.pdfIn PDF document text
    • https://semulojera.weebly.com/uploads/1/3/2/6/132695334/sutulad-jabalomu-xogixadabok.pdfIn PDF document text
    • http://nout-sale.site/16995667008q9j1j.pdfIn PDF document text
    • https://rajexomogalifi.weebly.com/uploads/1/3/4/8/134891851/4895741.pdfIn PDF document text
    • https://xelewutoritawi.weebly.com/uploads/1/3/1/0/131070131/razivuwopa.pdfIn PDF document text
    • https://zujuwedidikaf.weebly.com/uploads/1/3/4/3/134375258/guzerorugukibam.pdfIn PDF document text
    • https://guwuviwanawa.weebly.com/uploads/1/3/2/6/132695801/tagurar-newigamijut.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001128b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1128B 5492 bytes
SHA-256: 8f5bac8f7b6083c29551cf29de63c3730a6eb76556d75a81b48c925bd2828998
font_01_sfnt_off0001250e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1250E 10940 bytes
SHA-256: b050c4ac92cb37d3f8f5ae15ae4426e3da03202869f1537e52f6784d1d2b9f82

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