Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7445d60ce9efaa0…

MALICIOUS

PDF

48.0 KB Created: 2021-06-04 01:20:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: fcd8636558e622d440197a6972115d54 SHA-1: b0a6b89bbcd0270b6b680ad08b8b712a57a7b49a SHA-256: c7445d60ce9efaa017dbc4d05603f015a66afbe53028bfed180fea53499a4009
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a 'game hack generator' that redirects to known malicious infrastructure. The document body and embedded URLs suggest a phishing attempt to trick users into visiting potentially harmful sites. No scripts were extracted, but the presence of malicious redirector links and the overall lure indicate a high likelihood of a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

Heuristics 4

  • 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.
  • 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 https://netcdn.online/app/406889139/fighting-free-card-coin-master-game-hack In PDF document text
    • http://lib.smklabor.sch.id/repository/spins-gratis-coin-master-hoy_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-mod-apk-hack_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-robux-no-download_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/links-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-codes_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-robux-pins_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-coin-master-account_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-roblox-hair-to-wear_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-robux-games_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/minecraft-pocket-edition-free_GM479516143.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/play-roblox-for-free-on-google_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-get-free-cards-sets-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-hack-com_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-booga-booga-hack_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-free-spins-daily-link-updated_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/robux-xyz_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004e16.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E16 28940 bytes
SHA-256: 496fb164678812c7e62ef075073e75de56b54a8bbadd3bb80bbbdf22eaaa300a
font_01_sfnt_off00008ee3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EE3 2880 bytes
SHA-256: b053084cafd01c649462d87667ba56c569d6480ce60e7d20ae57ef6124cf178e
font_02_sfnt_off000098cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98CD 18336 bytes
SHA-256: f0cd4d6bae61bb9f7721c88e5b38a7df4c9de99d8fb8d81dbaccb772e8fa5d98

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