Malicious PDF — malware analysis report

Static analysis result for SHA-256 f213bf6479ff2ded…

MALICIOUS

PDF

74.3 KB Created: 2021-06-13 04:59:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3b427fdc788b378a52a43f261296517a SHA-1: d773cb85823abc1ef39e9e223d0e7088e925beaa SHA-256: f213bf6479ff2dedf45b3fafa6723a5181b7794e4acaeaed9e3236b2da05a80a
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that directs users to a site offering a cracked version of Adobe Photoshop. This, combined with the ML classifier and ClamAV detection, strongly suggests a phishing or malware distribution attempt. No scripts were extracted, but the presence of an external URI points to a social engineering tactic to trick users into downloading potentially malicious software.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://wastran.ru/pbw?utm_term=adobe+photoshop+cc+2018+download+with+crack
    • https://dexanefuv.weebly.com/uploads/1/3/1/3/131383512/xijuvaboz.pdf
    • https://cdn-cms.f-static.net/uploads/4488842/normal_603abd76ad056.pdf
    • https://cdn-cms.f-static.net/uploads/4475861/normal_604d16ae54e98.pdf
    • https://dagepafu.weebly.com/uploads/1/3/2/7/132740813/2ddda67f.pdf
    • https://zajolapa.weebly.com/uploads/1/3/0/7/130776493/1ee52dc35cf7.pdf
    • https://doxujivadew.weebly.com/uploads/1/3/4/8/134875716/mifikeruke.pdf
    • https://fawezodotemo.weebly.com/uploads/1/3/4/8/134871545/6351617.pdf
    • https://vobudogekatobef.weebly.com/uploads/1/3/0/8/130874620/4824199.pdf
    • https://static.s123-cdn-static-d.com/uploads/4490364/normal_60b3d7b9df058.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://wekibivu.pbworks.com/w/file/fetch/144458766/resumen_del_transporte_de_la_membrana_celular.pdf
    • https://uploads.strikinglycdn.com/files/64f1380a-2a89-4a20-8a71-d5e18e588bff/read_hyperbole_and_a_half_book_online_free.pdf
    • http://kekirow.pbworks.com/f/jubotuv.pdf
    • http://popuwepux.pbworks.com/f/twilight_series_books_online_free.pdf
    • http://rozeluf.pbworks.com/f/how_to_find_the_number_of_atoms_in_a_compound_given_mass.pdf
    • https://uploads.strikinglycdn.com/files/9d2c1168-5ce3-436c-9d9b-98a156ba1c0a/pigepojadasur.pdf
    • https://uploads.strikinglycdn.com/files/6d78649f-a457-44ad-8b71-7324e9c8af10/81254571156.pdf
    • https://uploads.strikinglycdn.com/files/65a88a59-e8fc-44f6-913f-874dca6f39f5/how_do_you_analyze_a_policy.pdf
    • http://nonesupul.pbworks.com/w/file/fetch/144554595/sofap.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_off0000e503.bin
16af9679c0ccabce1dfd09ff739917b3d12e4b452edff45d2cf9d2faf102bfc8
pdf-font-stream PDF embedded font (sfnt) at offset 0xE503 5964 bytes
font_01_sfnt_off0000f960.bin
a92a87ab7545973c4f65d97a32555012ff980821522973717dff201c6f69631b
pdf-font-stream PDF embedded font (sfnt) at offset 0xF960 10208 bytes