Malicious PDF — malware analysis report

Static analysis result for SHA-256 58d212ca629e5ed1…

MALICIOUS

PDF

41.3 KB Created: 2021-04-23 14:27:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: bd546ee8bd950fe713f170ad39096292 SHA-1: 97aef5765a3255c0bccdd304f6c880785fedbbaa SHA-256: 58d212ca629e5ed1b1fb768aeef43d8bdade57e28ceb529bbfc6bbf5c717318e
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links and a heuristic firing indicating it's a game hack redirect lure. The primary URL points to a site offering a 'free generator' for a game, which is a common pretext for malware distribution or phishing. No scripts were extracted, but the presence of numerous malicious-looking URLs suggests a phishing or downloader attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • 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://netsecure.top/app/431946152/how-to-use-racist-dolphin-on-free-exploiter-roblox-game-hack PDF link annotation
    • http://porownaj-laser.pl/images/hack-de-roblox-admin.pdfIn PDF document text
    • http://porownaj-laser.pl/images/como-hackear-un-usuario-en-roblox.pdfIn PDF document text
    • http://porownaj-laser.pl/images/free-robux-no-password-2021.pdfIn PDF document text
    • http://porownaj-laser.pl/images/mc-the-miner-freee-robux-hack.pdfIn PDF document text
    • http://porownaj-laser.pl/images/how-to-get-free-roblox-money-2021.pdfIn PDF document text
    • http://porownaj-laser.pl/images/hack-noclimb-roblox-2021.pdfIn PDF document text
    • http://porownaj-laser.pl/images/sistem48-hack-roblox.pdfIn PDF document text
    • http://porownaj-laser.pl/images/how-to-hack-cash-in-roblox.pdfIn PDF document text
    • http://porownaj-laser.pl/images/new-free-items-in-roblox-catalog-2021.pdfIn PDF document text
    • http://porownaj-laser.pl/images/roblox-ios-free-robux.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_003_off0000425e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x425E 25496 bytes
SHA-256: 5827a8ef152192bd2bde9a870e6f226c2363f7f92b89eddb12ce460b4a459c91
font_01_sfnt_off00007cec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CEC 19260 bytes
SHA-256: 6dee5c47f51aed4bba715f2affff8de7fe165a9b5bf3a6daad849188d95f1492