Malicious PDF — malware analysis report

Static analysis result for SHA-256 6cb1e76a55b91330…

MALICIOUS

PDF

158.6 KB Created: 2021-03-24 17:02:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fe97516b2558af30f12e18aa2ab4d3e6 SHA-1: 7f84fcb1368574fcc0738cb3bca86da6a64e0ac5 SHA-256: 6cb1e76a55b913300499365a06b022752b39e41aac87d8d6c50c24e07e0e7c4a
96 Risk Score

Malware Insights

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

The sample was detected by ClamAV as Pdf.Phishing.Trojan and flagged by an ML classifier with high confidence. It contains multiple embedded URLs, one of which is directly referenced in the PDF metadata, suggesting a phishing lure related to an award or prize. The presence of these URLs indicates the document's intent to redirect users to malicious sites for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

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://druttle.ru/award?keyword=diccionario+griego+espa%25C3%25B1ol+biblico+pdf
    • http://nudistoff.club/30328055559gqc1t.pdf
    • http://consumer-data-protection-bureau.com/gagurudatirikejawuxxvbw.pdf
    • http://nebo-baikala.ru/infectious_disease_guidelines_malaysia0m5v1.pdf
    • https://cdn.sqhk.co/gukisafuw/ijshbic/box_with_x_instead_of_emoji_android_meaning.pdf
    • https://tivirubopif.weebly.com/uploads/1/3/1/4/131406506/8358828.pdf
    • http://heliusdesign.ru/epic_games_installer_apkoceo9.pdf
    • http://meriline.store/makawiwxhnp4.pdf
    • http://goproonly.com/breville_bov800xl_accessoriesj3cmx.pdf
    • http://maslovauto.ru/ks2_year_3_maths_worksheetszpcq6.pdf
    • http://bestplacefor.rest/17797093817a9lx4.pdf
    • https://lugumeduzox.weebly.com/uploads/1/3/0/7/130740149/dakez.pdf
    • https://xisulufi.weebly.com/uploads/1/3/4/8/134870666/vipomif-minumugujeb-banamiji.pdf
    • https://cdn.sqhk.co/rifokinimito/8jaijji/50742334924.pdf
    • https://cdn.sqhk.co/dolubivo/hRjbOic/general_hood_battle_of_gettysburg.pdf
    • http://koreanluxe.com/5th_grade_common_core_math_standards_unpackeddvhy3.pdf
    • http://naturebiolog.fun/ps4_gold_headset_mic_not_working_wiredx5dwv.pdf
    • https://cdn.sqhk.co/vavegewumur/i3BavFG/32002222404.pdf
    • https://cdn.sqhk.co/desogepupema/2iboC00/good_captions_for_picture_with_friends.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://kikadunutifowew.rf.gd/autocad_presentation_download.pdf
    • http://vubenotabajumem.epizy.com/tizen.pdf
    • http://nexolep.rf.gd/what_are_the_objectives_of_auditors_in_auditing_data_management.pdf
    • http://pugijomo.epizy.com/aster_aweke_songs.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_off000221a1.bin
147c04f1d896c8a51031d996a100c713f3a804b13a1912a66a9dcfd06d97db69
pdf-font-stream PDF embedded font (sfnt) at offset 0x221A1 5672 bytes
font_01_sfnt_off000234ba.bin
8d493aabb9402e5d38ff95f93660ad75d70798c54f79d9a27fe9f1c87dec1f26
pdf-font-stream PDF embedded font (sfnt) at offset 0x234BA 20152 bytes