Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f4dce61a834db4c…

MALICIOUS

PDF

44.4 KB Created: 2021-06-11 08:25:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 64cfd788f02315102d58b97143c5accf SHA-1: 89860c0a177dba0a066f237af6fd427d950a3a4c SHA-256: 0f4dce61a834db4cea9bef9c8338e096308dab024c4377fe50806f54347670c6
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 0.9865

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.tw/app/431946152/apocalypse-rising-roblox-hack-game-hack PDF link annotation
    • http://internetdeputy.com/images/real-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/free-roblox-accounts-dantdm_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/hack-coin-master-app-ios_GM406889139.pdfIn PDF document text
    • http://internetdeputy.com/images/free-school-campus-roblox_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/como-hackear-super-dragon-ball-heroes-en-roblox_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/roblox-hack-ios_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/free-admin-exploiting-roblox_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://internetdeputy.com/images/free-premium-roblox_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/how-to-get-minecraft-for-free-on-computer_GM479516143.pdfIn PDF document text
    • http://internetdeputy.com/images/the-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://internetdeputy.com/images/free-roblox-shirt-templates_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/robux-money_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/best-sites-for-free-robux_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/roblox-assassin-hack-knife_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/como-conseguir-monedas-infinitas-y-tiradas-de-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://internetdeputy.com/images/coin-master-new-cards-hack_GM406889139.pdfIn PDF document text
    • http://internetdeputy.com/images/roblox-free-robux-hack_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
stream_004_off00004c61.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C61 26216 bytes
SHA-256: 27ea458f67b1f93b64ca03bdb50f1b31bdd76a2e981779c6a217142ab31a2a1c
font_01_sfnt_off000088d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88D7 18948 bytes
SHA-256: 6c31dd31c1cf1f7f1322586d63d48cfe979b4ed9006cc24e3ee2db723fb0e3c9

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