Malicious PDF — malware analysis report

Static analysis result for SHA-256 afdb9b5966c903ef…

MALICIOUS

PDF

73.1 KB Created: 2021-03-03 20:20:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: f35a696cbb20b40d1f55fbef2184ae24 SHA-1: cf8d24e96c7c47d7529b3511af4184c3570df980 SHA-256: afdb9b5966c903ef7b223815472f65b1e5467c31d4458cf9d6d3de5aa37d3f04
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jottigo.ru/award?keyword=how+to+use+marathon+watch PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4388815/normal_60300a92368eb.pdfIn PDF document text
    • https://sofifego.weebly.com/uploads/1/3/4/8/134899758/efc793068.pdfIn PDF document text
    • https://wojebera.weebly.com/uploads/1/3/0/7/130775791/rofekotowebasi.pdfIn PDF document text
    • https://cdn.sqhk.co/gojelonub/jgZqlA2/gajekomalemakonenem.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462694/normal_5fe5a812329fe.pdfIn PDF document text
    • https://cdn.sqhk.co/novitovikor/wzKhiwX/65777233164.pdfIn PDF document text
    • https://cdn.sqhk.co/mekaxosur/9aqja3z/favekuwibawarexamege.pdfIn PDF document text
    • https://cdn.sqhk.co/senuziker/GGhdeic/amazing_facts_about_the_human_body_with_pictures.pdfIn PDF document text
    • https://gituwelogasof.weebly.com/uploads/1/3/2/8/132814340/junizatixum.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367643/normal_5ff947b60a508.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366045/normal_5fddb2adb048b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373987/normal_5fdc6636e47e4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426062/normal_601f90f9126b5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376098/normal_5ffc9f47350ba.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392854/normal_5ff80b2183e35.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vosimamasi.epizy.com/enormous_turnip_story.pdfIn PDF document text
    • http://nomapalugaji.epizy.com/resabegeruxamofop.pdfIn PDF document text
    • http://batogegimuwew.rf.gd/bepujaj.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_off0000e29c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE29C 5060 bytes
SHA-256: 144dd73cc8a3155296b5b59ba6d1802938fa90f304c700bb3bc9a863e6c0de5d
font_01_sfnt_off0000f3b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3B1 10472 bytes
SHA-256: 4d8351b9bc3078b1830350bf49cfd35d95d2babe90a596e998f6f4e64a184afc