Malicious PDF — malware analysis report

Static analysis result for SHA-256 afa58262036e254d…

MALICIOUS

PDF

69.0 KB Created: 2021-02-20 01:26:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 281454ac661353a4e0cf17e906947609 SHA-1: 4d2c8ca5060ada9cc56a59f3e9597794c21d9e48 SHA-256: afa58262036e254d16ddd0a76baf5bf97eb024ae595efc64fe6389f5917647ad
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://druttle.ru/wix?keyword=ap+csp+quiz+%2523+4+-+2 PDF link annotation
    • https://sobasoje.weebly.com/uploads/1/3/2/6/132695832/c8efddd8cca559e.pdfIn PDF document text
    • https://cdn.sqhk.co/bogofuvizibu/Ci41iaV/18680004836.pdfIn PDF document text
    • https://cdn.sqhk.co/rerunaropiz/gfUhdja/guide_for_dream_league_soccer_2020.pdfIn PDF document text
    • http://nomofugosep.22web.org/how_to_exert_influence_without_authority.pdfIn PDF document text
    • https://cdn.sqhk.co/guxudakakali/Licvgho/space_engineers_ion_cannon.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406464/normal_5ff391e40d936.pdfIn PDF document text
    • http://ehaberdevlet.com/50933467846p1kwj.pdfIn PDF document text
    • https://fexalikinuzumow.weebly.com/uploads/1/3/5/3/135324316/165c4564565c7f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401525/normal_5fe537737520c.pdfIn PDF document text
    • https://cdn.sqhk.co/pixafosabow/ghjhChe/skateboarding_tricks_list_easiest_hardest.pdfIn PDF document text
    • https://cdn.sqhk.co/dewavasese/jgczibY/avatar_roblox_skin_free_clothes.pdfIn PDF document text
    • https://cdn.sqhk.co/vexavudakepa/gfNIFvr/gurofitisipiruwogurize.pdfIn PDF document text
    • https://cdn.sqhk.co/jivomawufem/gfEibjb/zabaralin.pdfIn PDF document text
    • https://cdn.sqhk.co/gowozepugax/jxoOKKs/5984754501.pdfIn PDF document text
    • https://bofujobepoj.weebly.com/uploads/1/3/1/1/131164048/rivivomejes_bipufawesefu.pdfIn PDF document text
    • https://godowipi.weebly.com/uploads/1/3/4/5/134520373/nuzififowajemix_wejusop_mepuzuj_dexifobasoburer.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d0cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0CD 4752 bytes
SHA-256: 6d8d94617ea4f562b828853085094e314d52f052908b68f6981646de695f42d2
font_01_sfnt_off0000e11f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE11F 11116 bytes
SHA-256: dd7ed29527bbb1dea09164c14f429ab5e323aab7c80cfe6165e95c533298b3e0

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