Malicious PDF — malware analysis report

Static analysis result for SHA-256 298ec2eebf9b180d…

MALICIOUS

PDF

77.5 KB Created: 2021-03-10 01:45:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 748939931bd1aa24fc4f5abc9c94c299 SHA-1: 2e6bebf93c37ce6534a55a9a6259679ed4401490 SHA-256: 298ec2eebf9b180d893418eeb26740ec4198a43ca7e230db4dd19d4f3cdf16f6
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, likely intended for phishing or malware distribution. ClamAV detection and ML classification strongly indicate malicious intent. The document body, though heavily obfuscated, suggests a lure related to an installation manual, aligning with a spearphishing attachment attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://pelibifir.ru/123?utm_term=broadlink+tc2+installation+manual
    • https://static.s123-cdn-static.com/uploads/4366625/normal_5fcdc3454460d.pdf
    • http://velesvoyage.ru/install_google_play_on_nova_7i96j1s.pdf
    • https://cdn-cms.f-static.net/uploads/4413696/normal_60146cc4d3dcb.pdf
    • http://paganel.world/gejemefigekugipizozaneu2rkr.pdf
    • http://discount50it.pro/what_are_the_cultural_effects_of_globalization5fhkf.pdf
    • https://cdn-cms.f-static.net/uploads/4491705/normal_601c7b19460cf.pdf
    • http://bigops.fun/91459900183hkds3.pdf
    • http://mydenverneighborhoods.com/76847074955txhky.pdf
    • https://cdn-cms.f-static.net/uploads/4382960/normal_601a3a667f1f1.pdf
    • http://legiontry.online/download_royal_robots_battleground_mod_apkzz3mf.pdf
    • http://3gusevshop.website/olympics_2016_medal_basketball0jfg3.pdf
    • http://vedice.ru/gogatoluliromukexumi4q3ff.pdf
    • http://govnososal.xyz/kamuvezegedawusuydp5k.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/vajefam/parkitect_scenario_guide.pdf
    • https://s3.amazonaws.com/kumasala/99605714910.pdf
    • https://9cc02d22-446e-415d-9686-6e49aadcb3b3.filesusr.com/ugd/aa6a08_4f8e46fe0271444daae58d5fa2ec0732.pdf?index=true
    • https://s3.amazonaws.com/migivewuwe/gozode.pdf
    • https://s3.amazonaws.com/benuka/what_was_the_purpose_of_the_red_pyramid.pdf
    • https://c09438b0-f1cf-4ade-afa2-d322e048c450.filesusr.com/ugd/313cc6_57bf131ed793461493f3d828a7e31b92.pdf?index=true
    • https://6cda4dd4-8aac-43e7-8003-7c0eea9f7907.filesusr.com/ugd/34e26e_eb2a616129f14f568d573d6b7ddcc678.pdf?index=true
    • https://s3.amazonaws.com/fuvidokibet/vovos.pdf
    • https://c1e70603-6ca1-47bc-880b-b60d7d434995.filesusr.com/ugd/df625d_ad04bffe615a4449a932773bc017a08d.pdf?index=true
    • https://s3.amazonaws.com/dazinibonofobi/11115166978.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_off0000f3f6.bin
321ad8fbf3cf2a282700a605c47b77ea22c473c734959f227ea5d8997dd37bca
pdf-font-stream PDF embedded font (sfnt) at offset 0xF3F6 5328 bytes
font_01_sfnt_off00010600.bin
0cd7003dae59723fca1813b7cc02902c708af72ceb2e4171be23fef657c3eae1
pdf-font-stream PDF embedded font (sfnt) at offset 0x10600 10136 bytes