Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfd5f2b88b5c0bfa…

MALICIOUS

PDF

41.4 KB Created: 2021-01-28 11:07:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: a13a1ff164d516a13ccd876dab19d70e SHA-1: 893da97af14154febf453447b4b0067dde4bb543 SHA-256: cfd5f2b88b5c0bfa556955414ade13bbc5b400db153d25b831d69cbbfb180cb1
242 Risk Score

Malware Insights

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

This PDF is identified as a malicious phishing lure due to its image-only nature and the presence of deceptive links. It utilizes a technique where a full-page screenshot hides a clickable button that redirects to attacker-controlled infrastructure. The document body is heavily obfuscated, but the heuristics and URLs clearly indicate a malicious intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7507

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Image-only PDF lure links to a deceptive (typosquat) host high PDF_IMAGE_LURE_DECEPTIVE_HOST_LINK
    PDF is image-heavy with little real text and its clickable action targets a host that impersonates a security/service/brand word with a look-alike homoglyph substitution — a digit OR a confusable letter (e.g. 'serv1ce', 'servlce', 'upd4te', 'm1cr0s0ft') — on a domain that is not a known-good site. This is a credential-phishing / fake-update carrier shape: a screenshot-like page funnels the victim to a deceptive look-alike destination.
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 41 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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.
  • 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://crophysi.ru/aws?utm_term=free+business+card+template+ai In PDF document text
    • http://13millions-warzone.store/help_annie_endingyxx3v.pdfIn PDF document text
    • http://espaceabone.com/7849966620221h9x.pdfIn PDF document text
    • https://cdn.sqhk.co/badaxiloru/2csVvI1/1368734084.pdfIn PDF document text
    • https://cdn.sqhk.co/dodufiruw/dTYgfFY/lobby_out_meaning_in_urdu.pdfIn PDF document text
    • https://cdn.sqhk.co/jawuraxexije/dTcghgf/download_game_football_manager_ultra.pdfIn PDF document text
    • http://vengriya.space/letter_of_recommendation_templateil8pb.pdfIn PDF document text
    • http://lessonsonline.site/butujajuwetapixalupbe8mv.pdfIn PDF document text
    • https://cdn.sqhk.co/daguvemet/hgjiihb/wabex.pdfIn PDF document text
    • https://tadinitalu.weebly.com/uploads/1/3/4/7/134744808/bf3fa56a7a.pdfIn PDF document text
    • https://bowalizixoled.weebly.com/uploads/1/3/1/8/131872289/2205272.pdfIn PDF document text
    • http://1xbet-sportstavki.fun/443107857088y6ex.pdfIn PDF document text
    • https://cdn.sqhk.co/vuwewiwudesi/djammgf/financial_calculator_free_download_for_windows_10.pdfIn PDF document text
    • http://lnstagram-helping.live/virginia_beach_map4g332.pdfIn PDF document text
    • http://tlgfree.xyz/boxing_fighter_arcade_game_with_handleszk6cp.pdfIn PDF document text
    • http://realwockyc.info/html5_annotationk0e9m.pdfIn PDF document text

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