Malicious PDF — malware analysis report

Static analysis result for SHA-256 06c41fa06b99e6b8…

MALICIOUS

PDF

72.6 KB Created: 2021-03-07 14:43:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 7341934f0c02ec7a7990041a12175d8c SHA-1: a885b97e376c2b3b43d0990e6c2000b0c2f39746 SHA-256: 06c41fa06b99e6b8d489beeef8a7f50a927b510af6e378f1098c58edd509ef2e
196 Risk Score

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.
  • 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.
  • 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://fokemale.ru/wix?keyword=gorillaz+final+drive+mac PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4393346/normal_5fc9a31299c55.pdfIn PDF document text
    • http://babbieshop.ru/vixamuxtn5n.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478933/normal_5ff341a11763b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420014/normal_6028ecd0b1465.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465398/normal_6001b89dec1ff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476437/normal_6028354d787bd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425235/normal_5fe5470434bf3.pdfIn PDF document text
    • https://nutomejeti.weebly.com/uploads/1/3/4/7/134702699/fe44018f34f655b.pdfIn PDF document text
    • http://tosety.xyz/simpson_power_washer_3200_psi_oil_typekml33.pdfIn PDF document text
    • http://kelnoteres.xyz/vesulibiwojozofabnt3t.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369336/normal_5ff8030d620e5.pdfIn PDF document text
    • https://gojudewusidaza.weebly.com/uploads/1/3/4/8/134888042/5704356.pdfIn PDF document text
    • http://xeeewq.xyz/emsisoft_anti_malware_portable_freel938n.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://891dfe3a-8969-4df2-b253-5ccc4ebbb7a0.filesusr.com/ugd/e66789_c4bf0a15860640418a140c889655d43d.pdf?index=trueIn PDF document text
    • https://e809654a-a95b-4dbc-a338-24085255a2f8.filesusr.com/ugd/1b6cec_385270064712410da564a5d3f6a4c11f.pdf?index=trueIn PDF document text
    • https://e4fb9bf1-a3d6-4767-9bf2-2a1021e5dc09.filesusr.com/ugd/53cfc7_67132e6ad8114f7a99baaa6ca24052c1.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000df5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF5F 5128 bytes
SHA-256: 2420ac51dbd89535f04e18edb1d2c6e5ef16f767f10113ae16e5ac484c5d2bc3
font_01_sfnt_off0000f0d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0D2 10752 bytes
SHA-256: 2c5a5fd02d828b643fd8bf64ca88333878cbf9a3b0d93309e507e084835993b8

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