Malicious PDF — malware analysis report

Static analysis result for SHA-256 79d226f417d35c8f…

MALICIOUS

PDF

34.5 KB Created: 2021-07-06 18:41:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: cbd30cb8fdb33dc548fc8740b811ce57 SHA-1: 9062abe891d45c26f1b435c1a05de553a1a515aa SHA-256: 79d226f417d35c8f2de0eafe0cd7c9ac96b342583416aa168ac35e43e3542612
76 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to websites that promise game hacks and cheats, such as for Roblox and Coin Master. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' specifically identifies this lure technique. The ML classifier also strongly indicates maliciousness. The document likely serves as a lure to redirect users to malicious sites, potentially for malware distribution or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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.tw/app/406889139/static-moonactive-net-game-hack PDF link annotation
    • http://slim.sisminkada.net/repository/roblox-hack-robux-4_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-robux-real-2021_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/hack-tiktok-fans-free_GM835599320.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/how-to-hack-roblox-accounts-with-roblosecurity_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/bird-simulator-roblox-cheats_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/how-to-get-free-robux-2021-with-no-survey_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/roblox-hacking-exploit-2021_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-coin-and-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/roblox-hack-de-romper-las-paredes_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/robux-codes-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/pubg-uc-up_GM1330123889.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/hacks-adopt-me-roblox_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/roblox-hack-cf_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-secret-roblox-name-pass-hack_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/how-to-hack-youtubers-roblox-account_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/coin-master-hack-2021-free_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-spins-link-in-coin-master-2021_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_off000032c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32C6 22936 bytes
SHA-256: 160220adc12fde0ae7dcc4c3f919001d6b9fa20cdd7a0cda01f2fce7d0f290ad
font_01_sfnt_off00006616.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6616 17948 bytes
SHA-256: 67acdf88d7f82aa11736b5f42608843c0f43d8267f05adab23741ad81cc2d9da

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