Malicious PDF — malware analysis report

Static analysis result for SHA-256 a626f9c29ec7f8b6…

MALICIOUS

PDF

34.6 KB Created: 2021-07-04 09:49:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 0486b32639b29a071f9cf35b8e86a7ca SHA-1: f29ffc79832b10031a05b9d92c3d061ea951be86 SHA-256: a626f9c29ec7f8b6bd1581b7a0aac77d6465e264a2429d697f4b828c3a685baf
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacking and generators, directing users to a known malicious redirector. The document body and embedded URLs suggest a phishing attempt to trick users into visiting malicious sites, potentially for credential harvesting or further malware delivery. No scripts were extracted, but the presence of malicious redirectors and lures indicates a high likelihood of a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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 http://netcdn.tw/app/431946152/robloxs-got-talent-hack-game-hack In PDF document text
    • https://c2o-library.net/catalog/repository/how-to-hack-roblox-money-2021_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/counter-blox-roblox-offensive-hack-money_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/coin-master-online-hack-no-survey-no-password_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/roblox-person_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/how-to-enter-roblox-cheat-codes_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/hacking-community-roblox_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/how-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-roblox-generator_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-minecraft-website_GM479516143.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/how-to-teleport-with-cheat-engine-roblox_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/robux-free-2021_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/no-verification-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/daily-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/hack-spin-coin-master_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/how-to-hack-roblox-speed_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/roblox-free-2021_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/how-to-get-vip-server-for-free-on-roblox_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/coin-master-free-spins-generator_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/how-to-hack-roblox-using-cheat-engine-67_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003113.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3113 22524 bytes
SHA-256: d93c8c7e94f633989684152e5edae875daca197c1f031b043c6dbf5c70989f41
font_01_sfnt_off0000636c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x636C 18576 bytes
SHA-256: e27ab8648a69d84c3dc3bd807aa08304924c79b9f790e004edea00f3002a5582

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