Malicious PDF — malware analysis report

Static analysis result for SHA-256 eae44f7472ae1461…

MALICIOUS

PDF

94.4 KB Created: 2021-03-21 03:08:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b7036eac2973906d457096c9a1ef86f1 SHA-1: 6956df77c19669b6af8b5f0451e58dc4b910f64f SHA-256: eae44f7472ae14619df68569881b7996a6ef9e546289c9c3554ff42c18bf86f2
196 Risk Score

Malware Insights

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

This PDF document is identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of an advance-fee scam. It contains numerous external links, including one pointing to a potential phishing URL, suggesting an attempt to redirect users to malicious sites. The document's structure and content align with common phishing and scam lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://botokaw.ru/wix?keyword=cestui+que+trust+nz
    • https://cdn.sqhk.co/sodelaranu/7lgejiV/wrestling_revolution_2d_mod_apk_2._072.pdf
    • https://cdn-cms.f-static.net/uploads/4391893/normal_5fd5f812dd77c.pdf
    • https://munuteme.weebly.com/uploads/1/3/4/8/134862418/ripud.pdf
    • https://cdn-cms.f-static.net/uploads/4368970/normal_604d0256e325b.pdf
    • https://cdn-cms.f-static.net/uploads/4380543/normal_6013f5f762949.pdf
    • https://cdn-cms.f-static.net/uploads/4381788/normal_600bf1d344c37.pdf
    • http://tezosomebapixim.22web.org/99737149888.pdf
    • https://cdn-cms.f-static.net/uploads/4486054/normal_5fd30ca919e1e.pdf
    • https://polaposegit.weebly.com/uploads/1/3/4/5/134591324/3124e723d95a2.pdf
    • http://xamurewezoviw.iblogger.org/how_to_make_book_from_images.pdf
    • https://static.s123-cdn-static.com/uploads/4413113/normal_5fc903ddb3b7d.pdf
    • https://cdn-cms.f-static.net/uploads/4457868/normal_60346afcda5fc.pdf
    • https://cdn.sqhk.co/fezemepusap/diaTfij/crown_princess_cruise_ship_news.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/b959896b-119f-43f1-9d4a-8254c5826acc/sogud.pdf
    • http://gimokami.rf.gd/minozulosudopasefebodolow.pdf
    • https://uploads.strikinglycdn.com/files/747bf217-a726-467c-a45a-50d2d9e460ca/bissell_proheat_plus_no_suction.pdf
    • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013636.bin
0613824f99679aa04610f9ec6d3298a305590ebcd2931e6d033a33710ea3976d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13636 4516 bytes
font_01_sfnt_off000145aa.bin
952b9819fea7cf4d9a0d188a4a576f6c278415b5d4238332a5a60e2e2a721973		 pdf-font-stream PDF embedded font (sfnt) at offset 0x145AA 11456 bytes

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