Malicious PDF — malware analysis report

Static analysis result for SHA-256 6fb197ac2ae486e9…

MALICIOUS

PDF

93.3 KB Created: 2021-04-07 09:15:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 16aa588e8b7cc8b048efdd5dec95703d SHA-1: 5c424b97c803d89ea58d9ec6844de015348e81bf SHA-256: 6fb197ac2ae486e9fe8bdf96fbb08c1cc95e12842f48b915be101ccdb1bc0db9
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains embedded URLs pointing to suspicious domains, suggesting it's used to redirect users to phishing or malware download sites. The document body, though heavily obfuscated, contains strings related to 'dashboard template' and 'wkhtmltopdf', which could be used as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://dafemum.ru/123?utm_term=dashboard+template+colorlib
    • https://cdn.sqhk.co/regavebike/GooxJhh/amazon_prime_music_family_uk.pdf
    • http://trastqort.online/why_is_projection_important_in_dramajjgp6.pdf
    • http://lnstagramoriginal.com/10510410525kjiug.pdf
    • https://cdn-cms.f-static.net/uploads/4379231/normal_60676e213c269.pdf
    • http://hookup754.fun/39824371770n5jdy.pdf
    • http://biggymstoe.com/candle_light_dinner_new_punjabi_songez6ce.pdf
    • http://flipping-car.online/89642452135406s7.pdf
    • http://instapodarok.site/jump_rope_exercise_for_belly_fatedq6v.pdf
    • http://rovexomakegan.22web.org/loctite_222_datasheet.pdf
    • https://cdn.sqhk.co/togixulala/p4FZKSd/android_tv_version_of_netflix.pdf
    • http://fasadi.site/wiwizanogjf2zz.pdf
    • https://static.s123-cdn-static.com/uploads/4483103/normal_5fcb20cb60def.pdf
    • http://myshoes.moscow/11563988220d0thu.pdf
    • https://cdn.sqhk.co/kogewole/jjX6ij9/30430284734.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://85d2c5a2-fc31-4f76-86b4-4ebe2abe2bf4.filesusr.com/ugd/a8cc01_b857c8cec2144c5f9fa386162bd03ad7.pdf?index=true
    • http://winovonisalupib.rf.gd/field_instrument_calibration_procedure.pdf
    • http://winuzuvejifod.epizy.com/greek_latin_root_words_worksheet.pdf
    • http://benufepoma.epizy.com/tutavifaxazibolarekop.pdf
    • http://tejizikadojuni.epizy.com/tamil_boy_baby_names_with_meaning.pdf
    • https://6eed613e-cbae-405e-b458-9655ef9033f8.filesusr.com/ugd/e4f6f0_d2876d585e0c48918c62cd375d1ca6b1.pdf?index=true
    • https://6afed14e-2b01-442b-8c2e-11a8a6f39965.filesusr.com/ugd/46a5ae_d7f288b2d82d4f10bbb071c186af6598.pdf?index=true
    • 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_off000130bf.bin
8036cbd3cb4e73541f56b9184935011fb8e67632e78260578ffa4b7f2adb3ba2
pdf-font-stream PDF embedded font (sfnt) at offset 0x130BF 5452 bytes
font_01_sfnt_off00014318.bin
c91cb31ae73ffc11a5b861f57c522d7c6b70a5840efe3440c1eef6db8b931ad0
pdf-font-stream PDF embedded font (sfnt) at offset 0x14318 11004 bytes