Malicious PDF — malware analysis report

Static analysis result for SHA-256 f767fc9062d42edd…

MALICIOUS

PDF

72.8 KB Created: 2021-02-23 13:18:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: fad549dcf5b94c89d35381306259c1b6 SHA-1: 82c62524a9480bcbe7d4a5bd5f7211a2630d0319 SHA-256: f767fc9062d42edd3015471850a11886d01eb717f1e5d04d7cb4d14dc161ff5d
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wix?keyword=samsung+rf260beaesr+ice+maker In PDF document text
    • https://cdn-cms.f-static.net/uploads/4416802/normal_600c4a00a3145.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412181/normal_60080fa28e985.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381738/normal_5ffd299bc0fb1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464529/normal_6023c993d5aa1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4505771/normal_5fe1cb6e30b32.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413346/normal_6029475443e65.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383579/normal_5fd2e9ec6cde1.pdfIn PDF document text
    • https://cdn.sqhk.co/jedelamodafa/jf53qs2/4479262821.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451555/normal_5fe370d3866fe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403143/normal_5fe7d29f16279.pdfIn PDF document text
    • https://cdn.sqhk.co/molodomo/dibjbf0/jurassic_park_pixel_art_grid.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409606/normal_5fe5ec6d8db2d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476418/normal_5fc8182f59d85.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365998/normal_5fdd33371fb11.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383452/normal_600e5ab52f0a1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401525/normal_6000518f150fa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501980/normal_5ff08a37e3449.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/remeranexe/66654808911.pdfIn PDF document text
    • https://s3.amazonaws.com/mukutud/sikusexumiwiwuxim.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000df26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF26 5904 bytes
SHA-256: 713960ef7d4e559948bc83f1b2a88106c81911e6c7d89619fecd91adca108a0d
font_01_sfnt_off0000f32b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF32B 10148 bytes
SHA-256: c30f92a166df6c8d2ae6c0fe260fbbf687088a87d4eceebd6fa714b0fe3fea00

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