Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2afd8827a96aa17…

MALICIOUS

PDF

69.8 KB Created: 2021-02-16 11:58:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 74f74a463ede573d07eed1e99ecdb943 SHA-1: fa9af64213d6c078bc9bedc09720dce2726437bd SHA-256: f2afd8827a96aa17fafe63bde671d89d229ec5f832640f410aa8b73cff31d9c6
244 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
  • 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://yafferge.ru/wb?keyword=how%20to%20change%20time%20on%20nortel%20networks%20phone In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366354/normal_5fd6392ba672c.pdfIn PDF document text
    • https://ruxibudowivuk.weebly.com/uploads/1/3/4/7/134728491/dezizaf.pdfIn PDF document text
    • https://temerineg.weebly.com/uploads/1/3/0/9/130969052/gotelujilagutibejoni.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450426/normal_6019782c5db4f.pdfIn PDF document text
    • https://cdn.sqhk.co/ragekasa/ictgfhj/mind_games_to_play_by_yourself.pdfIn PDF document text
    • https://pukelubaluwo.weebly.com/uploads/1/3/4/7/134741361/gumoradilis.pdfIn PDF document text
    • https://cdn.sqhk.co/wadusazilox/aBjfMjc/saturday_night_bingo_halls_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/pujixefan/ii6O6h3/frostborn_coop_survival_ios_release_date.pdfIn PDF document text
    • https://xubebedi.weebly.com/uploads/1/3/0/7/130776367/5805631.pdfIn PDF document text
    • https://vejilete.weebly.com/uploads/1/3/5/3/135312445/1469201.pdfIn PDF document text
    • https://kozinawesi.weebly.com/uploads/1/3/3/9/133997283/kixufoxazekosil-zijubulidifotaf.pdfIn PDF document text
    • https://zukutalemuz.weebly.com/uploads/1/3/4/5/134582669/gegeniwo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wovugi/ipv4_cidr_notation_cheat_sheet.pdfIn PDF document text
    • http://tuvadovu.rf.gd/kaxejawobuxipomujezob.pdfIn PDF document text
    • http://vovokab.rf.gd/maxefaneb.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_off0000d344.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD344 5464 bytes
SHA-256: b5a64ea83755f4561526bfce8a4a0c969eea069c429a247e4f41e1a7f4fea42a
font_01_sfnt_off0000e5c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5C4 10828 bytes
SHA-256: 03b89f51dcb96cebb940e2f022b46d9c9c985961a14493103f26910f1d0d2c91

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