Malicious PDF — malware analysis report

Static analysis result for SHA-256 f13a166843ec2d16…

MALICIOUS

PDF

60.9 KB Created: 2021-01-21 05:43:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: c29f64d11882b120377a3cb9dc0b1cbf SHA-1: b60c03f11cf0aec5d9052135b5cd88002c631070 SHA-256: f13a166843ec2d166733dd578acef35e2a3992daa743ca28ddd8f1885a6e659a
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafficel.ru/wb?keyword=cellular%20plus%20bozeman%20mt PDF link annotation
    • http://golepikoxeware.22web.org/pepopirexuw.pdfIn PDF document text
    • https://site-1248967.mozfiles.com/files/1248967/vutavumidawomumuki.pdfIn PDF document text
    • https://cdn.sqhk.co/lewulula/U4gf9hf/7240936028.pdfIn PDF document text
    • https://cdn.sqhk.co/wetilusogaki/cjbAiaW/soccer_tactics_download.pdfIn PDF document text
    • https://dajilifu.weebly.com/uploads/1/3/4/8/134891154/2196461.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417208/normal_5fb6bd6d062a7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393893/normal_5ff883d9ad679.pdfIn PDF document text
    • https://cdn.sqhk.co/buzivafulet/imhiJgf/66288732593.pdfIn PDF document text
    • https://gedimonisesejed.weebly.com/uploads/1/3/1/1/131163996/545025.pdfIn PDF document text
    • https://cdn.sqhk.co/faruvate/cu0icNX/volleyball_tournament_manager_software.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375197/normal_5fe70094844df.pdfIn PDF document text
    • https://site-1167925.mozfiles.com/files/1167925/minecraft_diamond_sword_costume.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gudanomakorake.epizy.com/jiverowofiwijavagaxuvud.pdfIn PDF document text
    • http://koxosam.rf.gd/jivabesutunifazilas.pdfIn PDF document text
    • http://fodabobaxuti.epizy.com/spotify_mod_premium_apk_latest.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_off0000b48f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB48F 5060 bytes
SHA-256: 1260c1fa9dd1c96b4a6b057929241b156ed34c31ab180fd91b084ec1a6781afa
font_01_sfnt_off0000c5a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5A8 9680 bytes
SHA-256: b4c4048d74d900cb05fdecbb5b3d5383e7d7d0db58d6479cfbffbdb1e28896ad