Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f5bb98a7406ba43…

MALICIOUS

PDF

75.6 KB Created: 2021-02-26 21:17:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: ddcdf1b17b5ba59f255bc97ddf2e8d76 SHA-1: 3e503b3d230dc122f407c1802fec9ab1b8e88caf SHA-256: 3f5bb98a7406ba43386dcd818dc9487700a74894e180a88da7a1b783a45743e2
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document contains numerous external links, many hosted on disposable domains, suggesting a link farm or phishing operation. The embedded URLs and the heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicate an attempt to redirect users to potentially harmful websites, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://soxebez.ru/award?keyword=what+do+monsters+represent PDF link annotation
    • https://sukuwakutas.weebly.com/uploads/1/3/4/6/134603616/demesabuki_kexojujoned.pdfIn PDF document text
    • http://koolmaxt.online/tevodaxalajubinepitugnuodz.pdfIn PDF document text
    • http://ital-girl.space/29723375890g2o8s.pdfIn PDF document text
    • http://sandiego-podcasts.com/beach_buggy_blitz_hacka84t3.pdfIn PDF document text
    • https://gafapelisepofas.weebly.com/uploads/1/3/4/7/134762307/363f740f361.pdfIn PDF document text
    • http://bluebadge-support.com/2146059834c43mc.pdfIn PDF document text
    • http://bedojipekasel.22web.org/23263558151.pdfIn PDF document text
    • https://zuzunavodezap.weebly.com/uploads/1/3/0/7/130776081/pukazumopogetuv-bakitiwad-tulej-rutijib.pdfIn PDF document text
    • http://moviesaddaa.online/zuvezufibuzzr1gp.pdfIn PDF document text
    • http://taptopbot.com/kofabekesofakorosonadf1wlq.pdfIn PDF document text
    • https://zaloposigino.weebly.com/uploads/1/3/0/7/130739621/bawolebomilanukija.pdfIn PDF document text
    • http://wellwork.site/caller_tune_free_mp499xcv.pdfIn PDF document text
    • http://topcabinets.xyz/does_taco_bell_hot_sauce_have_carbs9q98d.pdfIn PDF document text
    • http://jakartapro.xyz/direct_and_reported_speech_exercises_onlineshm89.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367674/normal_5fdb8b9d7a690.pdfIn PDF document text
    • https://gobalubige.weebly.com/uploads/1/3/5/3/135339343/febekunugezirup.pdfIn PDF document text
    • http://tojanulisito.iblogger.org/commando_2013_full_movie_for_mobile.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/sikuva/55380405567.pdfIn PDF document text
    • https://s3.amazonaws.com/tobito/kurozefid.pdfIn PDF document text
    • https://s3.amazonaws.com/wixanarer/sharingan_live_wallpaper_pro_apk_free.pdfIn PDF document text
    • http://wotixebapaxuwug.rf.gd/the_cake_eaters_full_movie_mp4.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_off0000ebcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBCF 5180 bytes
SHA-256: cd016dcd3064a5a1b657dc13f2c7c32039a7f9ca6e64ae2a66b299db0c8e3d13
font_01_sfnt_off0000fd4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD4B 10404 bytes
SHA-256: d8e3a084398bdc065f1f7946bf2e9067c2704e92ea31d45f8702e2515246ba4d

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