Malicious PDF — malware analysis report

Static analysis result for SHA-256 96de5dfff214c59e…

MALICIOUS

PDF

72.5 KB Created: 2021-02-13 21:43:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 2809e6643a87bcb0eea39bb3b5bda9d2 SHA-1: e892a0292f4434962527964f99b2f70668a90a92 SHA-256: 96de5dfff214c59ef7ea802db0a8021c6e0fc3dc05656660bb8d2c5f579c4c97
224 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File T1059.007 JavaScript

The PDF contains numerous embedded URLs, with one identified as a known malicious redirector. Heuristics indicate a browser extension installation lure, suggesting a social engineering tactic to trick users into downloading malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery.

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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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://crophysi.ru/aws?utm_term=how+to+use+canva+resume+template In PDF document text
    • http://befakupamexi.iblogger.org/basuxuwurupalekatit.pdfIn PDF document text
    • http://idealica-italiaofficial.site/criticism_of_behaviorism_theory7qjt2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462368/normal_5ffa95a131208.pdfIn PDF document text
    • https://cdn.sqhk.co/filodomazora/NwjighU/rare_beauty_selena_gomez_kit.pdfIn PDF document text
    • http://leketeko.22web.org/4172015795.pdfIn PDF document text
    • http://unosital.space/ffa_creed_challenge_crossword_answersdseqn.pdfIn PDF document text
    • https://cdn.sqhk.co/pobopuwubox/hijicyH/jeberilodukulokuxasit.pdfIn PDF document text
    • http://nufefabipiketod.22web.org/94384976187.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462727/normal_5fcbf8621d3a2.pdfIn PDF document text
    • https://cdn.sqhk.co/pananumujo/gCLjbCN/plex_alternative_for_ios.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367313/normal_5ffcd0417094c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mikipifovusi.epizy.com/altera_fpga_software.pdfIn PDF document text
    • http://lulikeleweworup.epizy.com/introduce_yourself_interview_answer_sample.pdfIn PDF document text
    • http://waroxudon.epizy.com/faxojulu.pdfIn PDF document text
    • http://roweviwumi.epizy.com/bureau_of_magical_things_episode_20.pdfIn PDF document text
    • http://vuvumotelikev.rf.gd/mimasodijemijazutogolo.pdfIn PDF document text
    • http://fafinonez.rf.gd/xujuzafesok.pdfIn PDF document text
    • http://sogaviwezed.rf.gd/old_christmas_songs_malayalam_free.pdfIn PDF document text
    • http://kipixuge.epizy.com/walloop_prime_mod_apk.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_off0000de8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE8F 5192 bytes
SHA-256: f37f12d771c9df7c9dd4c6df7926211db857d5b6bfa806b82a7a7c078b91d70f
font_01_sfnt_off0000f038.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF038 10880 bytes
SHA-256: 129af3429d48a7335717288192def229196826a22dac7f16158c4ff95d3fbd31

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