Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ec85058702847d0…

MALICIOUS

PDF

42.2 KB Created: 2021-06-13 18:48:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 5750d4e548db41e1a267f2ae79f6596f SHA-1: 467886a3ea8b239fda3a3f01c8456685c0abfd0d SHA-256: 0ec85058702847d0aaff8cdee9f2ac6edd0d7498c25eaeac6eac7545e00b79c1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to websites offering game hacks and free spins, with a primary redirector identified as malicious. The document body and embedded URLs suggest a lure for users seeking in-game advantages, which is a common tactic for distributing malware or conducting phishing. No scripts were extracted, but the presence of malicious redirectors and the lure indicate a high likelihood of a malicious workflow.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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 http://netcdn.co/app/406889139/how-to-get-free-spins-on-coin-master-game-game-hack In PDF document text
    • https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/coin-master-hack-spins-game-download_GM406889139.pdfIn PDF document text
    • https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/coin-master-hack-app-for-ios_GM406889139.pdfIn PDF document text
    • https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/toolbox-for-minecraft-ios_GM479516143.pdfIn PDF document text
    • https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/roblox-promo-codes-2021-robux_GM431946152.pdfIn PDF document text
    • https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/coin-master-hack-apk-ios_GM406889139.pdfIn PDF document text
    • https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/coin-master-free-spins-youthnow_GM406889139.pdfIn PDF document text
    • https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/how-to-use-cheat-engine-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/tiktok-free-apk-download_GM835599320.pdfIn PDF document text
    • https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/coin-master-free-spins-2021-ios_GM406889139.pdfIn PDF document text
    • https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/robux-win_GM431946152.pdfIn PDF document text
    • https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/coin-master-34-4-hack-download_GM406889139.pdfIn PDF document text
    • https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/real-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/how-many-levels-are-there-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/coin-master-free-spins-without-human-verification_GM406889139.pdfIn PDF document text
    • https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/coin-master-free-spins-link-today-instagram_GM406889139.pdfIn PDF document text
    • https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/blox-supply-free-robux_GM431946152.pdfIn PDF document text
    • https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/free-coins-coin-master_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
stream_003_off000049b0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49B0 24816 bytes
SHA-256: 971d9a95e708ec15a0ca35ff15a3349b398f5c39f0e14a9bd5a513373c8b8c35
font_01_sfnt_off000082c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82C4 18308 bytes
SHA-256: 10163bb99b7c52850725d3517fa904ee973029f2387d51d5c8df1a27f3218e6c

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