Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5fd0976dc82c908…

MALICIOUS

PDF

73.2 KB Created: 2021-03-11 18:19:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 3bd9b665416f03d48965e5a02fce0986 SHA-1: b8473716e579b34f4e65f19f0957e03518ec9bb0 SHA-256: f5fd0976dc82c908360d5568cacdebd1340e69a3abbcf6c1b9065f6fc42eff35
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://fokemale.ru/award?keyword=modals+of+probability+past+exercises+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4371023/normal_5ff1438bf3484.pdfIn PDF document text
    • https://wutotopuwa.weebly.com/uploads/1/3/4/4/134464713/39404bf.pdfIn PDF document text
    • https://jimigafekalese.weebly.com/uploads/1/3/1/4/131407537/sorivi.pdfIn PDF document text
    • http://summ-green.fun/18x1b.pdfIn PDF document text
    • http://bbbbbbbbeeee.space/wuguremapugojenito8.pdfIn PDF document text
    • http://pakizimavom.scienceontheweb.net/lanonasogariju.pdfIn PDF document text
    • https://dakewamegiru.weebly.com/uploads/1/3/5/3/135305658/pibumori.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389604/normal_60247d96cfb76.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496586/normal_5fcba1521daa1.pdfIn PDF document text
    • https://kanumipiga.weebly.com/uploads/1/3/5/3/135346224/62efe9.pdfIn PDF document text
    • https://kebolegenadudus.weebly.com/uploads/1/3/1/4/131454121/xexopuzimojijovilatu.pdfIn PDF document text
    • https://batapasupo.weebly.com/uploads/1/3/1/4/131482803/37894358efa8fee.pdfIn PDF document text
    • http://bigwin-1xbet.fun/39530808639lrfii.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449424/normal_6023ce327f48b.pdfIn PDF document text
    • http://clientbluebadge.com/holmes_humidifier_cool_mist_walmart2sf6c.pdfIn PDF document text
    • https://vurejubi.weebly.com/uploads/1/3/1/4/131454114/1046502.pdfIn PDF document text
    • https://setuwome.weebly.com/uploads/1/3/0/8/130874340/babuwuwurivupe_pafijilibenom_situriwekibek_rufevonodut.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/477c7cfb-0ab3-458f-ba8b-01148131cc96/linir.pdfIn PDF document text
    • http://guxejusoselota.myartsonline.com/what_to_name_my_graphic_design_company.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5241872a-101f-4d88-b873-17cce383ca57/tukiforesefisajes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52058a3e-e1c3-43be-a283-1e8779854361/74207220950.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/122f9270-9c52-4c40-a449-115053962b7a/37234846047.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_off0000dcd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCD6 5464 bytes
SHA-256: 5527c799f9fa56e65d815e4195c424870463dfc637316cfe047caa67fbc95f6b
font_01_sfnt_off0000ef8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF8C 12216 bytes
SHA-256: c2cbc2b44eebd51812055e52c2d08d8e636aa8503adc8e8db7c9a9964ad67905