Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd4954a04e88d285…

MALICIOUS

PDF

65.4 KB Created: 2021-03-06 12:40:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 472b01c726653e52e81c02535f06fc83 SHA-1: a5795cd3a084bc747684c66cc3f7e735ffe3ba1c SHA-256: dd4954a04e88d285c421db908d477738bd4ac41d001876fb7821401fbafd23a4
186 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.
  • 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://xajibur.ru/wix?keyword=vanilla+guide+addon+not+working PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4471710/normal_602bb32ecdb17.pdfIn PDF document text
    • https://fugesozuxi.weebly.com/uploads/1/3/0/7/130739141/rididuniguwepalef.pdfIn PDF document text
    • https://nasiposeki.weebly.com/uploads/1/3/4/7/134709897/879975f304d.pdfIn PDF document text
    • http://easybranding.org/rainbow_fish_real_nametwxof.pdfIn PDF document text
    • https://cdn.sqhk.co/motuxeneb/chc6gfR/83052340183.pdfIn PDF document text
    • https://jegupifak.weebly.com/uploads/1/3/4/0/134018348/4979350.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413845/normal_60235c8fd51d3.pdfIn PDF document text
    • http://flathead.us/what_is_financial_autonomy9r2l5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426697/normal_5fcf57f187923.pdfIn PDF document text
    • https://cdn.sqhk.co/simunenij/hfhaPSz/pikofezajilaxunitija.pdfIn PDF document text
    • https://cdn.sqhk.co/bepifopid/DTmrQhd/84255019572.pdfIn PDF document text
    • https://zuzatalo.weebly.com/uploads/1/3/4/3/134326893/fe7e484e5.pdfIn PDF document text
    • https://mutapeninudit.weebly.com/uploads/1/3/2/7/132712174/tuserovasis.pdfIn PDF document text
    • https://dulipitigisol.weebly.com/uploads/1/3/4/7/134717891/b8cea6ebaa203e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://48cc712b-de5e-493e-a198-f8962849e22b.filesusr.com/ugd/d2751c_45ebf7a00eda4daf9358a18ed3bb414e.pdf?index=trueIn PDF document text
    • https://58f604bd-1fd8-4cfe-af9b-f15e67d030d5.filesusr.com/ugd/9a7439_99ba2e69538144f2957e4c0b041edb31.pdf?index=trueIn PDF document text
    • https://667abc8f-92ca-45d9-bc9d-789c80a68858.filesusr.com/ugd/dcd78f_fefc7129629143778e0ffe5c50cdaa07.pdf?index=trueIn PDF document text
    • https://6e37e838-c278-4d46-baa9-25b8497af200.filesusr.com/ugd/fbcb80_c17a5272f76f4d168baefb042af8be4f.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_off0000c569.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC569 4936 bytes
SHA-256: bb98d4d399fc613b90c673e8e59c1192d53c427529bc2e08caa451373f16451d
font_01_sfnt_off0000d65a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD65A 10016 bytes
SHA-256: f3b9cd51538654c4ceb13a7edc9ac084dc76be2410e9b21b7c4e998ad48cc838

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