Malicious PDF — malware analysis report

Static analysis result for SHA-256 394c23a522e24f28…

MALICIOUS

PDF

34.4 KB Created: 2021-07-01 03:13:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 6f885da01ac1908a686e306280a666d0 SHA-1: 27eb3a7b265079ffcc99367ac98bc5c0e5bc8f59 SHA-256: 394c23a522e24f287be8a2f46b6b080fe69e53bd62d241d71402aa2a778554c7
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple embedded URLs, with a high-confidence heuristic indicating a lure for game hacks. The document body and extracted URLs strongly suggest a social engineering attempt to trick users into downloading potentially malicious files by promising game cheats or currency. No scripts were extracted, but the presence of numerous links to external resources is a primary indicator of malicious intent.

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/hack-roblox-admin-dl-game-hack PDF link annotation
    • http://perpus.polimarim.online/repository/roblox-hack-fliight_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/robux-hack-me-no-verification_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/who-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/free-spins-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/secret-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/free-games-to-get-robux_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/pokemon-go-free-friend-codes_GM1094591345.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/roblox-robux_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/legal-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/minecraft-java-edition-free-code_GM479516143.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/robux-boost_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/coin-master-free-spins-and-free-coins_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/carte-cadeau-roblox-robux-hack_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/roblox-hack-tool-free-robux-and-tix_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/roblox-com-games-referrer-roblox-player_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/hack-to-send-gold-cards-on-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/como-hackear-la-cuenta-de-tu-amigo-en-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/hacks-to-get-free-robux_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_off00002f1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F1D 22212 bytes
SHA-256: e8ea3088edf34b96132dddbb4a022b2ba58a2275f57ef767cf2ba48d41c647c3
font_01_sfnt_off00006074.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6074 19380 bytes
SHA-256: d7817de787e3ab567150693c2fc053fac01d7a3c3c1dbdc5dff5a4725c42e625

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