Malicious PDF — malware analysis report

Static analysis result for SHA-256 f674f164ee1d265a…

MALICIOUS

PDF

34.5 KB Created: 2021-06-18 19:51:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 961b0e7c8d8a28a468bffedd5ca649e7 SHA-1: 9ce28fb26a968d60a44b69f8625de053bd6ea199 SHA-256: f674f164ee1d265a3a6bc6fc40f9b7d628768c1913e25945742de7bda5aa618d
102 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 5

  • 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.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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/wright-your-password-for-free-robux-game-hack PDF link annotation
    • http://103.40.122.33/akasia/repository/idsk-roblox-hack_GM431946152.pdfPDF link annotation
    • http://103.40.122.33/akasia/repository/free-robux-generator-no-survey-no-download-2021_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-tiktok-followers-no-human-verification_GM835599320.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/roblox-dinosaur-simulator-cheats-dna_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-heads-in-roblox_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/blox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-get-free-gamepass-on-horse-world-roblox_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-robux-with-developer-tools_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-get-a-free-gear-in-roblox_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/hey-google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/coin-master-free-spins-daily_GM406889139.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-hack-in-roblox-2021-for-just-started-hackers_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/roblox-se-hack_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/tiktok-free-ad-credit_GM835599320.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-tamil-songs-music-codes-for-roblox_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-get-free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/roblox-pal-hair-free_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
font_00_sfnt_off00002e89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E89 21952 bytes
SHA-256: 65eb1e52b7f81c1b0383800a68b5c7f3d026247d0abe90ba7c36badd07a61f8b
font_01_sfnt_off00005f05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F05 19960 bytes
SHA-256: 78e5fbad575c1ca1c6c49ce70bf02012885740f1419e1ff2c5754c6f07259110