Malicious PDF — malware analysis report

Static analysis result for SHA-256 35eab6bca189ad79…

MALICIOUS

PDF

59.2 KB Created: 2021-02-14 12:49:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 2b5f8214a3d637d3f633947bc0007114 SHA-1: 0491677469c57f4f401eafe08678eb0f9ea7c5f5 SHA-256: 35eab6bca189ad79d666fb80af528d264d9426d9dba61a42589ed21ec4b1b7c4
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://bologen.ru/wix?keyword=de0+nano+datasheet PDF link annotation
    • https://luxaxila.weebly.com/uploads/1/3/0/8/130814132/fbe1f8.pdfIn PDF document text
    • https://roturusuwanowus.weebly.com/uploads/1/3/4/3/134363773/1875138.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380540/normal_6016a6b75abe1.pdfIn PDF document text
    • https://kazazurijufom.weebly.com/uploads/1/3/0/8/130814205/8eaf8cdecf069c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379374/normal_601f9a490fb8f.pdfIn PDF document text
    • https://dagaroxir.weebly.com/uploads/1/3/5/9/135973008/niponajilibumebe.pdfIn PDF document text
    • https://xikematevi.weebly.com/uploads/1/3/4/3/134392378/7078098.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373504/normal_60112db1b151d.pdfIn PDF document text
    • https://jegupifak.weebly.com/uploads/1/3/4/0/134018348/0ad88a799.pdfIn PDF document text
    • http://lnstagram-helping-centre.com/live_score_zoom_bet_today_matchrue7h.pdfIn PDF document text
    • https://rexakutomas.weebly.com/uploads/1/3/0/7/130739652/1172575.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489404/normal_60282b1365af7.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_off0000ade0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xADE0 4924 bytes
SHA-256: f1c798d74b29e7d0ad5140ffbe1cb2b5dccae904f55411fcb621cf7e7cfab772
font_01_sfnt_off0000bea3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBEA3 9900 bytes
SHA-256: c0411128268b50601c99e3356faf7c1442fe04f7707d3af4c3ced3b2ee1f1153