Malicious PDF — malware analysis report

Static analysis result for SHA-256 99af4345e0e6285e…

MALICIOUS

PDF

43.6 KB Created: 2021-06-03 22:56:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: d1ce5d0c312dbdacf4c4d610707e66a9 SHA-1: d4c0658587f9f01f40cf5ef7b396440978c0f049 SHA-256: 99af4345e0e6285eb36a853fcdbac53d2299698d09aa41e77fad2518463566cb
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by an ML classifier and contains heuristics indicating it's a lure for game hacks. It embeds external URIs pointing to potentially malicious download sites. The document body, though heavily obfuscated, contains URLs that likely lead to further malicious content or exploits.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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 https://netcdn.online/app/479516143/minecraft-bedrock-hacks-game-hack PDF link annotation
    • https://lib.btkljogja.or.id/repository/minecraft-free-online-games_GM479516143.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/how-to-get-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/how-do-you-earn-robux_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/how-to-get-a-lot-of-robux_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/coin-master-free-pet-food_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/robux-miner_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/roblox-hacks-and-cheats_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/minecraft-pe-hacks_GM479516143.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/op-rewards-free-robux_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/free-roblox-wings_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/is-there-any-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/free-minecraft-printables_GM479516143.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/hack-free-spin-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_004_off00005010.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5010 24464 bytes
SHA-256: 7b94b60fcc6bc54c1199eccac3ee4d993f45f7557bcd65b3414133f68af338b1
font_01_sfnt_off0000880e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x880E 18268 bytes
SHA-256: cdc10c07562964e95d3c60cab3c6d937b43618c1a43ea86bc4060c2923515875

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