Malicious PDF — malware analysis report

Static analysis result for SHA-256 057624957f41f80a…

MALICIOUS

PDF

76.5 KB Created: 2021-03-15 10:55:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 650beae6b931bdd852139de75d76ecc2 SHA-1: 7cdb109ef3c6c7d6edd32fc28a849fdf06430927 SHA-256: 057624957f41f80afe084771cbc13ede84419c175fcac0a984d2ea706329beec
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a specific ClamAV detection name of Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0. An external URI, https://xezojetit.ru/wix?keyword=draft+spoken+words, was extracted, indicating a likely attempt to redirect the user to a malicious site. The document body, though heavily obfuscated, suggests it is a PDF file. The presence of an embedded URL and the overall malicious verdict strongly suggest a phishing or malware distribution attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://xezojetit.ru/wix?keyword=draft+spoken+words
    • https://cdn-cms.f-static.net/uploads/4405206/normal_601d159cdc9df.pdf
    • https://cdn.sqhk.co/famagafe/vjbawgi/babuf.pdf
    • https://static.s123-cdn-static.com/uploads/4447097/normal_6003e21ac8192.pdf
    • https://cdn-cms.f-static.net/uploads/4384167/normal_5fd68c26397f4.pdf
    • https://static.s123-cdn-static.com/uploads/4413016/normal_5fe070cd41953.pdf
    • https://cdn-cms.f-static.net/uploads/4391302/normal_6014a53d1fb08.pdf
    • http://faketikus.22web.org/42139580650.pdf
    • https://cdn.sqhk.co/fojevimexu/deAiaia/57159734916.pdf
    • https://cdn.sqhk.co/lepavenujal/QggVhjH/tentacle_wars_zone_42.pdf
    • https://static.s123-cdn-static.com/uploads/4381344/normal_5fdd92e924f45.pdf
    • https://cdn.sqhk.co/mapetidul/gewHuUN/99780111690.pdf
    • https://cdn.sqhk.co/foroboreb/hig85Pg/dr._driving_2_game_install_for_pc.pdf
    • https://cdn-cms.f-static.net/uploads/4490515/normal_603fdeda196e3.pdf
    • https://cdn-cms.f-static.net/uploads/4420592/normal_604245a5f3be0.pdf
    • https://cdn.sqhk.co/xijogedobu/QYiduic/stickman_football_2016_mod_apk.pdf
    • http://ropakega.22web.org/73764333724.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/ccb3d1ba-3835-4fba-8ab7-cc9a0e2bf56f/sherlock_holmes_books_set.pdf
    • https://uploads.strikinglycdn.com/files/feee1194-6abd-43df-9f3d-020f674fe7f0/30848231849.pdf
    • https://uploads.strikinglycdn.com/files/1c0ae8f5-3d89-4dfd-8691-d65d0bb4eaf3/13002972143.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_off0000edb8.bin
7c08d481216248669e646be8218061af6d150cafc1b921c17ff9c7c3c78b7095
pdf-font-stream PDF embedded font (sfnt) at offset 0xEDB8 5160 bytes
font_01_sfnt_off0000ff73.bin
ade842eeb28e0abe5ac84f534f98bb998eef5ecc3760d96c1334c4bdffcfdd39
pdf-font-stream PDF embedded font (sfnt) at offset 0xFF73 10552 bytes