Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f17202e84baf2e5…

MALICIOUS

PDF

92.3 KB Created: 2021-04-05 09:44:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6302096951512fa936c85c33e69e0b0f SHA-1: 9ede371dde95bf52a0fc48c165991c9261615318 SHA-256: 3f17202e84baf2e5c70b7b7d38fac7289ceaae25da1080c90c7fa43252584b22
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The document body, though heavily obfuscated, suggests a lure related to firearm maintenance. The presence of an external URI strongly indicates an attempt to redirect the user to a malicious site for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://jumiwimov.ru/strik?utm_term=how+to+clean+a+taurus+pt-22
    • https://static.s123-cdn-static.com/uploads/4459177/normal_6001f832c2aff.pdf
    • https://cdn.sqhk.co/samanugutu/BYlgehj/gta_5_cheats_ps4_unlimited_money_2020.pdf
    • https://cdn.sqhk.co/nefakovuwot/ibQhvRs/ruzuwojiludunogirekev.pdf
    • https://static.s123-cdn-static.com/uploads/4469860/normal_5ffe017e2067a.pdf
    • https://cdn-cms.f-static.net/uploads/4459060/normal_6053a664bb18d.pdf
    • http://puzemapulozuw.22web.org/beading_for_beginners.pdf
    • http://center-about.com/navien_ncb_240_dimensionstrrzu.pdf
    • http://zoomita.space/kobafolifikogopoil75q.pdf
    • https://cdn-cms.f-static.net/uploads/4465024/normal_60230f3e4bfd2.pdf
    • http://techanomic.com/journey_to_the_center_of_the_earth_2008_full_movie_download_in_hindi_480pzqem1.pdf
    • https://cdn.sqhk.co/tasaxasup/iiaJBzl/86611452636.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fupuvafibip.rf.gd/formation_appareil_respiratoire_autonome.pdf
    • https://s3.amazonaws.com/patilawasu/lugakubi.pdf
    • https://s3.amazonaws.com/wikurixobelu/piduguda.pdf
    • https://s3.amazonaws.com/gorajikunobixi/el_alquimista_espaol_gratis.pdf
    • https://s3.amazonaws.com/makumapikeze/dipalawobipufawovagipubib.pdf
    • https://s3.amazonaws.com/jesidofefe/white_rodgers_thermostat_reset_1f85-277.pdf
    • https://s3.amazonaws.com/julaxel/27697783819.pdf
    • https://s3.amazonaws.com/rekorewexidiwo/44415546700.pdf
    • https://s3.amazonaws.com/titugome/1970_boy_scout_handbook.pdf
    • https://s3.amazonaws.com/bulolimepol/27933230778.pdf
    • http://tovezujatim.rf.gd/why_did_my_pressure_cooker_stop_working.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_off000127df.bin
1f51ee6260a92d3d3e046cb5f3bb9301b262207601fb445751f98df2c67b7002
pdf-font-stream PDF embedded font (sfnt) at offset 0x127DF 5144 bytes
font_01_sfnt_off00013985.bin
42f92da0b542dffe843ab039e03960ec0ae8f6bf768f13fc1d848e0d934e7556
pdf-font-stream PDF embedded font (sfnt) at offset 0x13985 12020 bytes