Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac1137f2fa6024d7…

MALICIOUS

PDF

42.4 KB Created: 2020-10-06 11:24:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 774d6cb120517d2b65cc3a21226a3ed6 SHA-1: d65b550fee21b9566e4431e874725d4c8afc3c4e SHA-256: ac1137f2fa6024d780e63c2e9805b10cba8b166faf47203b6c199d6a7925cb82
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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 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.
  • 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://cctraff.ru/strik?keyword=proaller+smart+humidifier+manual In PDF document text
    • http://nawilemo.charlidrawz.com/uploads/1/3/0/9/130969352/jerirededinali-vulagufolepi.pdfIn PDF document text
    • http://files.pushtichetna.com/uploads/1/3/0/7/130739916/246cc912205.pdfIn PDF document text
    • http://files.smithbrosplay.org/uploads/1/3/0/7/130739570/kujusuparejip-zovivumije.pdfIn PDF document text
    • http://files.christiansinculture.com/uploads/1/3/0/7/130739225/xevukiputibivewa.pdfIn PDF document text
    • http://files.bigstepmissions.org/uploads/1/3/1/8/131856308/6151a0c820c5ba5.pdfIn PDF document text
    • http://files.corpuschristikennelclub.com/uploads/1/3/1/6/131637691/kugaruwu.pdfIn PDF document text
    • http://files.newspringscommunity.org/uploads/1/3/1/4/131453329/3351242.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/ec95883f-ecfa-4b8e-ac50-2e5fbf3d2802/45200902198.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/481f6ef4-2b2a-4ce6-9635-f0b0e74c9cba/85966980559.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77e33461-6c79-426f-b029-bd6f233a4c03/gujixa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04b215b0-a336-40b8-a511-891cd6ac6cde/pesapeganakek.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/54c77172-a5f2-4680-82e4-7d824e3317da/41571951898.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3103a65-9f88-4776-9ed6-fb03352163e4/jidame.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4bd0db61-1c37-41e1-98eb-fcc3b8bcb91c/zudatafaxigola.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5387dc5b-2631-46e2-8d93-12476fb59a25/24244643356.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/61111053-29b1-46e8-836b-a452e98ff553/godaginori.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09920e86-120c-4cfd-9ae5-c0c8a80f979d/32512072557.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006974.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6974 5148 bytes
SHA-256: 6cf68c43dbd5330dd017e8bf27fed5f87915556ff625c92f165d4d056704695b
font_01_sfnt_off00007ac2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AC2 9964 bytes
SHA-256: faefee153f3d84f4d2cf3d042c4e79a68eb88864d39d6b7f46d720d05e869390

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