Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2f3e1c31bc6689a…

MALICIOUS

PDF

33.8 KB Created: 2021-07-05 07:14:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 42e63b6f2c8a0d6f820bc7d898843aa2 SHA-1: 8bcd4d8ca5bd930727c276ab8abf73a9ddab6d6b SHA-256: c2f3e1c31bc6689aa867ef8c9c01c06ce2aedda974b0531592efd10ef91cf3a1
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.tw/app/406889139/coin-master-attack-block-hack-game-hack PDF link annotation
    • https://library.itn.ac.id/perpusitn/repository/cheats-for-bear-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/anarchy-hack-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/10-know-this-give-free-robux-secret_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/does-e-free-work-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/daily-free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-shinobi-life-face-hack_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/dll-for-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-roblox-giftcards-not-used-100_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-ninja-blox-2-hack_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/fast-robux-online_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-get-free-robux-in-obby_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/dll-aimlock-hack-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/comment-installer-un-cheat-sur-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/tokyo-ghoul-roblox-cheat_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-get-free-robux-on-phone-2021_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-free-spin-today-2021_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/strucid-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-daily-free-spins-25_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-promocodes-2021-free_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-coins-coin-master-haktuts_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_002_off00002f4d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2F4D 22540 bytes
SHA-256: fd5a0a4e0d6210421abababa9c103ae6bd29828e26cf10e497f7a2008582cb6b
font_01_sfnt_off00006186.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6186 18292 bytes
SHA-256: d2ba2b0e7a3f103841e549252e20483683215ddad8ac1b66f82bb541e66cd415

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