Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b9520aa21b7cb80…

MALICIOUS

PDF

42.0 KB Created: 2021-05-16 02:12:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: bc00b1f711e1ff7c31ee0707e5202cb5 SHA-1: d68ac0516fe131ac88db194177b05ce24f8245e3 SHA-256: 6b9520aa21b7cb80db3c36dba1614389cacb5d508be3305fdac49c8098729715
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 0.9971

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.xyz/app/431946152/get-free-roblox-game-hack PDF link annotation
    • https://puslitbangperhutani.com/ckfinder/userfiles/files/2021-roblox_GM431946152.pdfIn PDF document text
    • https://puslitbangperhutani.com/ckfinder/userfiles/files/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • https://puslitbangperhutani.com/ckfinder/userfiles/files/coin-master-apk_GM406889139.pdfIn PDF document text
    • https://puslitbangperhutani.com/ckfinder/userfiles/files/minecraft-kill-aura_GM479516143.pdfIn PDF document text
    • https://puslitbangperhutani.com/ckfinder/userfiles/files/coin-master-game-hack-kaise-kare_GM406889139.pdfIn PDF document text
    • https://puslitbangperhutani.com/ckfinder/userfiles/files/how-to-get-free-robux-without-surveys_GM431946152.pdfIn PDF document text
    • https://puslitbangperhutani.com/ckfinder/userfiles/files/get-coin-master-free-spin_GM406889139.pdfIn PDF document text
    • https://puslitbangperhutani.com/ckfinder/userfiles/files/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • https://puslitbangperhutani.com/ckfinder/userfiles/files/minecraft-book-collection_GM479516143.pdfIn PDF document text
    • https://puslitbangperhutani.com/ckfinder/userfiles/files/coin-master-free-spins-and-coins-hack_GM406889139.pdfIn PDF document text
    • https://puslitbangperhutani.com/ckfinder/userfiles/files/free-robux-picture_GM431946152.pdfIn PDF document text
    • https://puslitbangperhutani.com/ckfinder/userfiles/files/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://puslitbangperhutani.com/ckfinder/userfiles/files/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • https://puslitbangperhutani.com/ckfinder/userfiles/files/hack-a-game_GM431946152.pdfIn PDF document text
    • https://puslitbangperhutani.com/ckfinder/userfiles/files/easy-robux-today-com_GM431946152.pdfIn PDF document text
    • https://puslitbangperhutani.com/ckfinder/userfiles/files/toolbox-premium-apk_GM479516143.pdfIn PDF document text
    • https://puslitbangperhutani.com/ckfinder/userfiles/files/roblox-getting-hacked_GM431946152.pdfIn PDF document text
    • https://puslitbangperhutani.com/ckfinder/userfiles/files/you-promised-my-son-free-robux_GM431946152.pdfIn PDF document text
    • https://puslitbangperhutani.com/ckfinder/userfiles/files/minecraft-pocket-edition-free_GM479516143.pdfIn PDF document text
    • https://puslitbangperhutani.com/ckfinder/userfiles/files/ways-to-get-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a00.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A00 24544 bytes
SHA-256: 5c6afe68e11171abbdc549754f44d1e875d1b13c4d15ea9abfadeed6c11c8d9c
font_01_sfnt_off00008284.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8284 18052 bytes
SHA-256: 3163a373a79a6ba2b402f3bc3abf4e04b0a5713e8f73e060e65042d4a11df7ac

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