Malicious PDF — malware analysis report

Static analysis result for SHA-256 961a742700c49021…

MALICIOUS

PDF

70.9 KB Created: 2021-02-14 21:59:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 3a025a44499d7a12c58f19488157b3b2 SHA-1: 198059058c1ffe05228e7036851c188dd8279fe8 SHA-256: 961a742700c49021dff892da7e350543572873293565506e4801c914fb42329b
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://baarspo.ru/wix?keyword=too+cool+for+christmas+soundtrack PDF link annotation
    • https://widetidutu.weebly.com/uploads/1/3/1/4/131453832/c4608a02502a5f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392218/normal_6028174402607.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454306/normal_60030bae490e0.pdfIn PDF document text
    • https://wufopuse.weebly.com/uploads/1/3/5/3/135300065/somujivewoxemegas.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447089/normal_60148f7a45474.pdfIn PDF document text
    • https://bagirarivevi.weebly.com/uploads/1/3/1/3/131384609/pajerunibu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411683/normal_5fca9cc843779.pdfIn PDF document text
    • https://wugexufaferefe.weebly.com/uploads/1/3/0/7/130776446/dulirafotuv.pdfIn PDF document text
    • https://tevupiju.weebly.com/uploads/1/3/4/8/134865653/xaluvowovubilita.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417032/normal_600050a4c9bf5.pdfIn PDF document text
    • https://zezazerin.weebly.com/uploads/1/3/1/8/131856191/mekokukunar.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383804/normal_6000579d514be.pdfIn PDF document text
    • https://puzilefamurujuz.weebly.com/uploads/1/3/2/7/132712080/pefozoxofafofex.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465249/normal_5fe03bfc0d27e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419832/normal_5ff3ab44502e5.pdfIn PDF document text
    • https://roxogarafuxor.weebly.com/uploads/1/3/1/1/131164132/norudisa_kujametemilojok_tukerorasovo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d87c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD87C 5276 bytes
SHA-256: a54ba6370233db0bb5ad9c47549600d986d4484a2a7ad4e59585e0ff5d94f331
font_01_sfnt_off0000ea41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA41 10760 bytes
SHA-256: 8a4c370c48636f1100faadb5527c1463b26cf9ea2a1d4f47d84c9ea39d842939

Open this report in the interactive analyzer, or submit your own file for analysis.