Malicious PDF — malware analysis report

Static analysis result for SHA-256 c648f1cf29400951…

MALICIOUS

PDF

34.8 KB Created: 2021-07-08 14:19:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: d53f689306c9031260715490ee229d0f SHA-1: 0b684e6fb56dcf1a47606a4114a28b770f710dd3 SHA-256: c648f1cf29400951171fa8ad94b8632c6a599301e9f0f08d804259bdf63d4f82
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to external websites that are associated with malicious redirectors and lures for game hacks and free currency. The document body and embedded URLs suggest a phishing attempt to trick users into visiting these sites, which likely host further malicious content or exploit kits. The presence of a password protection lure indicates an attempt to bypass security controls.

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/406889139/free-coin-master-link-2021-game-hack In PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-no-password_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/funny-free-roblox-rthro-avatars_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-spins-and-coins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/pixies-gigantic-coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-character-free_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-village-cost_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/100-robux_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-free-spins-hack-ios_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-card-collection-hack_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/minecraft-ps4-free_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/www-coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-mods-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/minecraft-bedrock-edition-hacks_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-cards-hack_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-hack-here_GM406889139.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_off00003151.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3151 22828 bytes
SHA-256: ea369938302408cdd0723c4068a0b18d2874ae7a55905b2bca20ba2728ecf9c0
font_01_sfnt_off00006487.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6487 18568 bytes
SHA-256: e88b6940b40ea5040f81da917e0c9c8aa36dd3f4bad0e71faf6aa4f6d6035265

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