Malicious PDF — malware analysis report

Static analysis result for SHA-256 af199b3a5a7c4b08…

MALICIOUS

PDF

81.1 KB Created: 2021-03-30 01:25:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b60a84d040bfbe11614bec983ac4dd73 SHA-1: 7339dde096bbd70b411da79116a1ba6a44f01000 SHA-256: af199b3a5a7c4b08c1aa715b04844755e12b99c63262ffba66cb467ba30aa4da
96 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, with a high risk score. It contains an embedded URL pointing to 'https://soxebez.ru/123?utm_term=analyste+d%2527+affaires+formation', which is likely used for phishing or to download a secondary payload. The document body, though partially corrupted, suggests a lure related to business analyst training.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://soxebez.ru/123?utm_term=analyste+d%2527+affaires+formation
    • https://static.s123-cdn-static.com/uploads/4443341/normal_5ffb4f9c1afa8.pdf
    • https://static.s123-cdn-static.com/uploads/4384640/normal_6001011b8336e.pdf
    • https://static.s123-cdn-static.com/uploads/4371269/normal_5ff75936da3fe.pdf
    • https://cdn-cms.f-static.net/uploads/4454303/normal_601a39458e510.pdf
    • http://wiinorama.fun/allen_bradley_contactorszf414.pdf
    • http://it50disconto.pro/how_does_a_camera_lucida_workcr2f6.pdf
    • https://cdn-cms.f-static.net/uploads/4416929/normal_6051f3dace6c9.pdf
    • https://cdn-cms.f-static.net/uploads/4465543/normal_6012dc58673ab.pdf
    • https://cdn-cms.f-static.net/uploads/4465125/normal_60125647ae0b1.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/woxewiwupir/44252940121.pdf
    • https://s3.amazonaws.com/leteraxewe/the_fountainhead_by_ayn_rand.pdf
    • http://purofix.epizy.com/bridgestone_bicycle_catalogue.pdf
    • http://woximijik.rf.gd/12487253361.pdf
    • http://zuzipidagazetu.rf.gd/42256769776.pdf
    • https://s3.amazonaws.com/xelimewat/cat_in_the_hat_costume_girl.pdf
    • https://s3.amazonaws.com/gulapore/99524285234.pdf
    • http://resisimokopi.epizy.com/suvox.pdf
    • https://s3.amazonaws.com/fifomi/72505548511.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e764.bin
348e7a9d3ac9fa8a0928f221e2bed55c99e3663204083863c88f3250d7f60a97
pdf-font-stream PDF embedded font (sfnt) at offset 0xE764 5176 bytes
font_01_sfnt_off0000f900.bin
2519b5b3f7f28443735c3666b577d6c5c0f5e9e6fe4b536506d3d5dca7ea632f
pdf-font-stream PDF embedded font (sfnt) at offset 0xF900 11860 bytes
font_02_sfnt_off0001217b.bin
541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501
pdf-font-stream PDF embedded font (sfnt) at offset 0x1217B 16204 bytes