Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fac917518539a22…

MALICIOUS

PDF

33.3 KB Created: 2021-06-18 16:40:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 65f14b6c17529cd0a9b7ffe5d1e3f597 SHA-1: d44ff7219e2f2b761c78130f92c09b4112be4598 SHA-256: 7fac917518539a22b00c78f9e75320746b08af05ae1d9ed24f9b96c82a5a7bef
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/431946152/fashion-frenzy-roblox-free-game-game-hack PDF link annotation
    • http://katalog.ireyogya.org/repository/minecraft-free-minecraft_GM479516143.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-free-generator_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/moonactive-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-robux-no-verification-required_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-spins-and-coins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-become-a-bc-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/roblox-free-hair-girl_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-many-levels-in-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/minecraft-for-chromebook-free_GM479516143.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/minecraft-hacks-115-2_GM479516143.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/minecraft-tower-defense-hacked_GM479516143.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-make-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/minecraft-java-edition-free-code_GM479516143.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-unlimited-spins-hack_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/robux-free-online_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-can-i-get-free-robux_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_off00002a54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A54 22392 bytes
SHA-256: 9062ffbe140c3d7772bbe5df12bd06a77151d721fa7b7917f5dbd84cd95bfda9
font_01_sfnt_off00005c34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C34 19456 bytes
SHA-256: e4396ba0d4c6b505e169ec8a1dfaedca5582b632c5e6d6d8908d5a374fab7205

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