Malicious PDF — malware analysis report

Static analysis result for SHA-256 80606b98e29c36d2…

MALICIOUS

PDF

34.6 KB Created: 2021-06-27 01:52:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: cf5e7403badd3b24e5eb875a744bb709 SHA-1: 287a311ac7c571a792596b59bc72e20d61eb7695 SHA-256: 80606b98e29c36d26af0cf886aa42d81731e5c821d95fbc648e6cde6ec01fabf
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 0.9980

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/how-get-free-robux-on-pc-game-hack PDF link annotation
    • https://repository.stikesindramayu.ac.id/repository/free-supreme-roblox-modek_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/speed-hack-in-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/arrest-script-roblox-hack_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/roblox-dance-your-blox-of-cheat-for-focus-points_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/free-robuxs-no-offer_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/free-gifts-coin-master_GM406889139.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/free-roblox-items-with-working-promo-codes_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/coin-master-gold-cards-free_GM406889139.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/roblox-promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/robux-free-co_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/free-unlimited-coin-master-online-tool_GM406889139.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/hacks-for-roblox-219_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/minecraft-pe-free_GM479516143.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/free-robux-download-app-verification-hack_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/comment-cheat-sur-tower-battles-roblox_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/free-spins-and-coins-blogspot-coin-master_GM406889139.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/oprewards-points-generator_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_off000030b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30B8 22284 bytes
SHA-256: b813b4ff1164dd20f825574fbfbdbf4585f1c971fa3e6e222c9d052da50890f8
font_01_sfnt_off0000621d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x621D 19136 bytes
SHA-256: bd0d7c8ddfac793e373b84eb3a3cf15b2baa2ce76c0b2b564e73a205771472d9

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