Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd522650a0996402…

MALICIOUS

PDF

66.2 KB Created: 2021-02-16 19:15:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 205c800273e5d238470e714f1a2f4d62 SHA-1: 764481ae2e6e5b8127d9c649ac2d6f855b23b351 SHA-256: dd522650a09964025c2bd900e81a3dc4a1eddb7e200a7ca3be4a4645cc6d020b
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wix?keyword=pa+emissions+exemption+sticker In PDF document text
    • https://static.s123-cdn-static.com/uploads/4415964/normal_5fcebec0766b5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461216/normal_5fe78f3e64a07.pdfIn PDF document text
    • https://kenoduzuran.weebly.com/uploads/1/3/5/3/135350653/riganijowaxex_nabumosolaje.pdfIn PDF document text
    • https://raxagipob.weebly.com/uploads/1/3/4/8/134883443/9464958.pdfIn PDF document text
    • http://onlinekartiadesi.com/hack_game_lien_quan_apk1e0r6.pdfIn PDF document text
    • https://popagupo.weebly.com/uploads/1/3/1/4/131407300/12702bf05313fbb.pdfIn PDF document text
    • http://accface.in/652967142649ul7e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479916/normal_5fe261145d395.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454556/normal_6016fb2aa597c.pdfIn PDF document text
    • http://1green.space/aptoide_apk_download_minecraft6yro1.pdfIn PDF document text
    • http://bettyloustintruckbbq.com/9478871571kgqkf.pdfIn PDF document text
    • https://vebavorosufate.weebly.com/uploads/1/3/4/7/134742301/8772400.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411501/normal_5fd78dd2ec0d5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484103/normal_5fec74f8401dc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389824/normal_601f847b63d2e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378606/normal_6003bdaf1fd40.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377679/normal_5fd76d0262dd2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vateden.epizy.com/fonegokivowonojepuxogulej.pdfIn PDF document text
    • http://zobovobewuw.epizy.com/bakelite_sheet_suppliers_near_me.pdfIn PDF document text
    • http://resuzebapaluga.rf.gd/business_law_exam_1_answers.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_off0000c6ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6FF 5180 bytes
SHA-256: 16402021d8db076a35411fa01c20f3f5b666259407e5d380fc92bd2688f75155
font_01_sfnt_off0000d891.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD891 10340 bytes
SHA-256: 9ebbe441134ad4f0a5fc79a6afdac519094e6771c14aee65c5bed98ee4ce5702