Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c10a54c2bf06bc3…

MALICIOUS

PDF

76.4 KB Created: 2021-03-17 15:43:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a9f2201b78be064702eb53853066e8d9 SHA-1: 5a63ef6301c41d0081b1113c0b82413ed380ff46 SHA-256: 9c10a54c2bf06bc318d6698202cfcf4918fbae3122394c581c22447be8a7d156
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that redirects to a site offering a "final fantasy 7 mod menu apk", suggesting a phishing or malware distribution lure. ClamAV and ML classifiers strongly indicate maliciousness, and the PDF_URI heuristic points to a suspicious external URL. No scripts were extracted, but the overall structure and embedded URL are indicative of a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://leonvi.ru/wix?keyword=final+fantasy+7+mod+menu+apk
    • https://cdn-cms.f-static.net/uploads/4477886/normal_604ce5e73870f.pdf
    • https://cdn-cms.f-static.net/uploads/4414701/normal_5fe7bcbdbabb1.pdf
    • https://cdn-cms.f-static.net/uploads/4479679/normal_602f2f0260d99.pdf
    • https://static.s123-cdn-static.com/uploads/4413842/normal_5ff93094d66ec.pdf
    • https://cdn.sqhk.co/rolileduvof/ejgjbic/85748566829.pdf
    • https://cdn.sqhk.co/segenapiza/hhqvbCI/poberotibodab.pdf
    • http://fepaporipevari.mypressonline.com/4593079477.pdf
    • http://xusolupofedowi.iblogger.org/24586395781.pdf
    • http://dokinal.iblogger.org/77657897694.pdf
    • https://cdn.sqhk.co/fedovipawe/l7ngjce/learn_html5_free_download.pdf
    • https://cdn-cms.f-static.net/uploads/4471703/normal_6038fe275ff4e.pdf
    • http://jojidasusesot.sportsontheweb.net/how_to_drain_swamp_cooler_for_winter.pdf
    • http://ragitikevuwa.22web.org/51556480194.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://bobujosu.epizy.com/autotune_evo_vst_64_bit.pdf
    • https://uploads.strikinglycdn.com/files/8c998fa6-d128-447d-af53-01c28f1e1d6b/how_to_connect_sony_soundbar_ht-ct290.pdf
    • https://uploads.strikinglycdn.com/files/cd08ba54-ff11-4a0a-b69e-d5855b87c9ff/24230757866.pdf
    • https://uploads.strikinglycdn.com/files/88e868de-6094-4b25-8e20-7c6837fa88a8/basic_spoken_english_course.pdf
    • http://vusukunuvedigup.epizy.com/how_expensive_is_firehouse_subs.pdf
    • http://bukaduxanob.epizy.com/little_red_riding_hood.pdf
    • http://kewagar.epizy.com/the_redemption_of_althalus_characters.pdf
    • http://nisinukodepafix.rf.gd/fiberiruleginatojisa.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee3a.bin
28de60d4e1b267663e5a2d7d6411bfff2459123120747c77db8f11c5eec0abd8
pdf-font-stream PDF embedded font (sfnt) at offset 0xEE3A 5292 bytes
font_01_sfnt_off0001004e.bin
5acf8c7268883ab7ab1a9cbc5a52c415de7c94665049df00f77ee43cdc1d880c
pdf-font-stream PDF embedded font (sfnt) at offset 0x1004E 10452 bytes