Malicious PDF — malware analysis report

Static analysis result for SHA-256 8afdb64c225ec24d…

MALICIOUS

PDF

71.6 KB Created: 2021-02-25 08:50:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 3e43557a997f34ba2dac725c22d45eaf SHA-1: ba189d2555a065dd8e6ac0a8b06fd80df357093b SHA-256: 8afdb64c225ec24db227bfbf935def8317d14396592396ec4bf61e43915f0502
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, with one prominent URL appearing to be a search result lure for technical information. The presence of multiple disposable domains and link farms suggests an attempt to obscure the final malicious destination, likely a phishing page or malware download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://baarspo.ru/strik?utm_term=how+do+i+set+up+answering+machine+on+my+panasonic+phone PDF link annotation
    • https://cdn.sqhk.co/wepunajexiju/ja3maia/xugisipoziwapulej.pdfIn PDF document text
    • https://cdn.sqhk.co/kawonidoza/XxhfN0p/82181443484.pdfIn PDF document text
    • http://naykaryadom.fun/78308844503to0kd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497368/normal_601778cc72597.pdfIn PDF document text
    • https://cdn.sqhk.co/zifeduwa/bgfgeoP/54102025364.pdfIn PDF document text
    • https://cdn.sqhk.co/texekikevow/eha9Ghi/world_cup_2026_stadium_list.pdfIn PDF document text
    • https://cdn.sqhk.co/gemadaruvow/fIGwxhg/98816791104.pdfIn PDF document text
    • https://cdn.sqhk.co/jekefebiba/AjgjgBH/295050272.pdfIn PDF document text
    • http://detonic-official.website/how_to_generate_bode_plots_in_matlab23q3u.pdfIn PDF document text
    • https://cdn.sqhk.co/videgogaf/byheggf/alien_armageddon_space_gladiators.pdfIn PDF document text
    • https://cdn.sqhk.co/zikufivol/jgyVPw2/three_kingdoms_global_war_best_heroes.pdfIn PDF document text
    • https://cdn.sqhk.co/kubepugemaki/g9iajea/lord_of_clans_android_4._4._2.pdfIn PDF document text
    • http://obschee.xyz/free_iq_tests_with_answers_and_explanationstmiar.pdfIn PDF document text
    • http://onlinetyz.xyz/fudimipunuliraraxoziwx67a1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dazigeles.rf.gd/59070576423.pdfIn PDF document text
    • http://leludopovofa.rf.gd/vofenanekegezuzadefo.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_off0000d9d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9D0 5608 bytes
SHA-256: 1dbf95a5c3b9618b611dd15900c39770caaf377c73aec7ddc6ef19111cced37e
font_01_sfnt_off0000ecd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECD1 10504 bytes
SHA-256: 2bbf95340e1eb805d13ec933ab536de77224ee9edefc4baa42763f1db36c1ec9

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