Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd1b2aa0437b6ce5…

MALICIOUS

PDF

78.4 KB Created: 2021-01-31 14:41:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: ec17ac04bd05830a426775216fc9b091 SHA-1: 17aff64e73e75ac5aac34de7ce599f6c40acda75 SHA-256: dd1b2aa0437b6ce5f5afadf1a9742f19e8cd731169be9ea1d5fb49188af6e4ec
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 high risk score. It contains an embedded URL that appears to be a lure for downloading game modification software, suggesting a phishing or potentially unwanted software distribution scheme. The presence of multiple suspicious URLs further supports this assessment.

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://leonvi.ru/123?utm_term=download+cartoon+wars+3+mod+hack+apk PDF link annotation
    • https://cdn.sqhk.co/memenewo/chfoijv/zombie_survival_wasteland_mod_apk_unlimited_money.pdfIn PDF document text
    • http://rat-red.space/galaxy_guardian_space_shooter_cheats2y6vf.pdfIn PDF document text
    • http://rezefad.22web.org/19481828519.pdfIn PDF document text
    • http://crispyset.online/lilodixogl0ol9.pdfIn PDF document text
    • https://cdn.sqhk.co/mepetiruzi/CX4hhhg/chest_sim_for_clash_royale_mod_apk.pdfIn PDF document text
    • http://bluhgang.best/46016162957gjkc3.pdfIn PDF document text
    • http://jasapremium.xyz/75214924963z00hw.pdfIn PDF document text
    • http://helpverifedbadges.com/94131186836j87d1.pdfIn PDF document text
    • http://acgmgroup.ru/jotijabjy4rr.pdfIn PDF document text
    • http://verifiedbadge-lnstagram.com/kufutajimizumororizadusr4zqv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/geradi/dejitonidiv.pdfIn PDF document text
    • https://s3.amazonaws.com/widofafane/xepewivesexuwuvop.pdfIn PDF document text
    • https://s3.amazonaws.com/xijuxosisomuna/mafuvojitowimidemo.pdfIn PDF document text
    • https://s3.amazonaws.com/mogipegi/pavuzajusi.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dda9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDA9 5632 bytes
SHA-256: b6575fe1ed2e80f124e6b57f4f5887f3e9aed1d7f8935a8c1e2d4632291f5aeb
font_01_sfnt_off0000f0c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0C0 10928 bytes
SHA-256: 76cd3d2fa465ce828986a99a645cab60c09cca4f68baf178ac2c879d6a49aa0e
font_02_sfnt_off00011603.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11603 16528 bytes
SHA-256: 6e7e75aa4db894d9c341230371ab92e5f618ff4314d8149a2559024315af82d0