Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e865f3fca323782…

MALICIOUS

PDF

80.3 KB Created: 2021-02-24 22:36:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: d036e840da7ab89453ce6fccba07623c SHA-1: fa5d2a49fd538b6db5ac313a2a9d0c70934c3caa SHA-256: 8e865f3fca323782ef096e98bec01700c5b493fa1da20677fea43f9424c8caee
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF document contains an embedded URL that leads to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, suggests a lure related to marital counseling, which is a common tactic for social engineering.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jacksth.ru/strik?utm_term=benefits+of+pre+marital+counselling PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4470535/normal_5fd70a908eab6.pdfIn PDF document text
    • https://cdn.sqhk.co/vewukiziwemi/qQgcjgy/jukun.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421342/normal_600adedd1785e.pdfIn PDF document text
    • https://cdn.sqhk.co/pigexebobe/aW1A71W/guess_the_liverpool_football_players_cars.pdfIn PDF document text
    • http://libralab.digital/manual_gsm-_911s_auto-_dialerz3rdy.pdfIn PDF document text
    • https://cdn.sqhk.co/kelopifagisu/gjhhgrz/planet_bomber_game_download.pdfIn PDF document text
    • https://cdn.sqhk.co/xazururoxe/6zTkk2c/food_wars_season_3_dub_cast.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483349/normal_5fc7db3c9423b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471513/normal_5fe969c769db5.pdfIn PDF document text
    • https://cdn.sqhk.co/dodamewope/eAjiBij/lonariza.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412999/normal_600fc4fa0f2fa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479439/normal_5fc7531e1df5a.pdfIn PDF document text
    • https://cdn.sqhk.co/gukugifixija/iovgdia/95043963382.pdfIn PDF document text
    • http://leopards.space/stellaris_enigmatic_fortress_rewardswew62.pdfIn PDF document text
    • https://cdn.sqhk.co/bolukawet/HifigNC/ranger_vs_zombies_hacked_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486053/normal_5fcaece548edf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466413/normal_600f576d9b7c7.pdfIn PDF document text
    • https://cdn.sqhk.co/silijebutu/hfihibH/prime_peaks_cheats_ios.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_off0000fdf6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDF6 5384 bytes
SHA-256: f5d43c820de3d83e3d7287d01dc7a8734def6c77d2fd4842e9f8a6091cdf847c
font_01_sfnt_off00011032.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11032 10472 bytes
SHA-256: abf1d481aedc528dc6356da73b227d7822c7a876844c5a9fb11a19f6f053c69d

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