Malicious PDF — malware analysis report

Static analysis result for SHA-256 dda5b66edb1fe27c…

MALICIOUS

PDF

33.2 KB Created: 2021-06-26 07:53:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: b220b5b07cc391273b5e183006e57ba3 SHA-1: 4dda895c6a3088de1a9f86373d9a18b133a04d82 SHA-256: dda5b66edb1fe27ceb896ca3578b891473a0c1714f38ec51bfc4c4f35b53346a
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/roblox-apocalypse-rising-2-cheats-game-hack PDF link annotation
    • http://lib.teknik.unimal.ac.id/repository/roblox-item-codes-free_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/coin-master-free-spins-2021-today_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/free-fast-robux_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/roblox-avatar-maker-free_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/get-free-robux-info_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/coin-master-free-spins-hack-download_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/minecraft-hax-download-no-virus_GM479516143.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/80-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/free-roblox-scripts_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/robux-pin-codes-free_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/how-to-get-into-a-account-thats-hacked-in-roblox_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/coin-master-hack-activegamer_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/coin-master-hack-no-survey_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/mcpe_GM479516143.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/minecraft-free-download-mac-full-version_GM479516143.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/free-roblox-accessories_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/grayphiny-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/free-robux-promo-codes-september-2021_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/coin-master-gift-hack_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
font_00_sfnt_off00002cc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CC7 21376 bytes
SHA-256: 2f7373a7a9dab2ccf06ef339a6792326f0da58198839c0fea3f7ad326f73a82d
font_01_sfnt_off00005b8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B8A 19356 bytes
SHA-256: f374300fe52dac81fc2e21c9c4d6bb042271ff389f9989ab6ea64d200f8a7e42

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