Malicious PDF — malware analysis report

Static analysis result for SHA-256 0682c1885fe3adc1…

MALICIOUS

PDF

41.8 KB Created: 2021-05-12 06:30:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 064660f37d08908d526ce8b38a68eb43 SHA-1: 3419da8d87798492ee4f44b58388133cda19934e SHA-256: 0682c1885fe3adc12f10a254cf45c6911d7467949109b2aba5fdb43b5d6d03bc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to known malicious infrastructure, specifically promoting game hacks and free spins. The document body and heuristics indicate a lure designed to trick users into clicking these links, which likely leads to further malicious content or malware. No scripts were extracted from this sample.

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 https://netcdn.xyz/app/406889139/coin-master-free-spins-facebook-game-hack In PDF document text
    • https://lms.mabbaca.com/__statics/gudangsoal/files/roblox-prison-life-hack_GM431946152.pdfIn PDF document text
    • https://lms.mabbaca.com/__statics/gudangsoal/files/real-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://lms.mabbaca.com/__statics/gudangsoal/files/free-minecraft-skin-creator_GM479516143.pdfIn PDF document text
    • https://lms.mabbaca.com/__statics/gudangsoal/files/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • https://lms.mabbaca.com/__statics/gudangsoal/files/coin-master-coins_GM406889139.pdfIn PDF document text
    • https://lms.mabbaca.com/__statics/gudangsoal/files/master-coin-free-link_GM406889139.pdfIn PDF document text
    • https://lms.mabbaca.com/__statics/gudangsoal/files/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • https://lms.mabbaca.com/__statics/gudangsoal/files/roblox-demon_GM431946152.pdfIn PDF document text
    • https://lms.mabbaca.com/__statics/gudangsoal/files/hack-to-send-gold-cards-on-coin-master_GM406889139.pdfIn PDF document text
    • https://lms.mabbaca.com/__statics/gudangsoal/files/how-to-hack-coin-master-root_GM406889139.pdfIn PDF document text
    • https://lms.mabbaca.com/__statics/gudangsoal/files/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://lms.mabbaca.com/__statics/gudangsoal/files/real-roblox_GM431946152.pdfIn PDF document text
    • https://lms.mabbaca.com/__statics/gudangsoal/files/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • https://lms.mabbaca.com/__statics/gudangsoal/files/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://lms.mabbaca.com/__statics/gudangsoal/files/hack-de-coin-master_GM406889139.pdfIn PDF document text
    • https://lms.mabbaca.com/__statics/gudangsoal/files/free-coin-and-spin-for-coin-master_GM406889139.pdfIn PDF document text
    • https://lms.mabbaca.com/__statics/gudangsoal/files/hackear-coin-master-espaol_GM406889139.pdfIn PDF document text
    • https://lms.mabbaca.com/__statics/gudangsoal/files/bloxpage-free-robux_GM431946152.pdfIn PDF document text
    • https://lms.mabbaca.com/__statics/gudangsoal/files/best-free-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • https://lms.mabbaca.com/__statics/gudangsoal/files/coin-master-cards-for-free_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_off00004835.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4835 25492 bytes
SHA-256: 80e874dc00b2d82b42f82a781d01db22a5f5f7bb922af8219fca9ca9129f796f
font_01_sfnt_off00008128.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8128 18212 bytes
SHA-256: a7d0484bdc545634c9b46f4dcbf794c30064c3aaaf3cdd537b213ac19f08a95c

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