Malicious PDF — malware analysis report

Static analysis result for SHA-256 fae2dbe41004c593…

MALICIOUS

PDF

75.6 KB Created: 2021-02-20 14:33:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 88cd01c5db5936b2879860feed55b391 SHA-1: 700ecb4888a78c1666af8f84d0878a7684d8b17e SHA-256: fae2dbe41004c593140d2563fc57fc474290424ebfbff95e9506e965c4f2989f
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://baarspo.ru/123?utm_term=what+is+the+12+body+systems PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366325/normal_60299c41d6d81.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448540/normal_5ff982e9f1ad0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467003/normal_6020a9c20556b.pdfIn PDF document text
    • https://nobewiga.weebly.com/uploads/1/3/5/3/135315034/susapidokebifon-wutiwij-tajab-vosofowujew.pdfIn PDF document text
    • http://sdfsdfsdf.shaketorch.com/xonuxolakegafizesapudidol.pdfIn PDF document text
    • https://vagewojevibo.weebly.com/uploads/1/3/4/8/134873572/438ae2dd.pdfIn PDF document text
    • https://wiwofuda.weebly.com/uploads/1/3/2/3/132303082/4eabd6292abd0f1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369671/normal_602bb2cc48014.pdfIn PDF document text
    • https://zabokibijeg.weebly.com/uploads/1/3/5/3/135350751/2192bf.pdfIn PDF document text
    • http://mikapamaku.22web.org/abinaya_song_mp4_free.pdfIn PDF document text
    • https://zovuzutozureje.weebly.com/uploads/1/3/0/7/130739602/3311468.pdfIn PDF document text
    • https://xexiroxenokela.weebly.com/uploads/1/3/4/6/134613030/girefusik.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375088/normal_6014d133de490.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/tasufagijaremo/56463116113.pdfIn PDF document text
    • https://s3.amazonaws.com/litunux/71340967397.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_off0000ea9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA9C 5376 bytes
SHA-256: 7784e1fa070c1e15ce016681745bb4060b03f66e668ea174bad94d594c887195
font_01_sfnt_off0000fcd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCD6 10960 bytes
SHA-256: cf8eb8d85e5529fc97e9c00d36f35af2e96b62f05a5cfefb68941e55034e7145