Malicious PDF — malware analysis report

Static analysis result for SHA-256 933e59be51ed81cb…

MALICIOUS

PDF

44.0 KB Created: 2021-05-11 02:27:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 921a3528cf30f52f3b91272909a98514 SHA-1: 94b36f786788c2b635ace75144c82f7f6e042982 SHA-256: 933e59be51ed81cb204ac69e82950b134da63053f63b9d65aa4cda4bf60f1eba
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to external websites, including a known malicious redirector, disguised as free game hacks and generators. The document body and heuristics indicate a lure designed to entice users to click these links, likely leading to further malicious content or downloads. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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.xyz/app/479516143/minecraft-server-free-trial-game-hack In PDF document text
    • http://mohacad.com/images/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://mohacad.com/images/coin-master-hack-pc-cheat-engine_GM406889139.pdfIn PDF document text
    • http://mohacad.com/images/how-to-get-free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://mohacad.com/images/roblox-gift-card-for-free_GM431946152.pdfIn PDF document text
    • http://mohacad.com/images/como-hackear-juego-coin-master_GM406889139.pdfIn PDF document text
    • http://mohacad.com/images/free-minecraft-server-hosting-with-plugins_GM479516143.pdfIn PDF document text
    • http://mohacad.com/images/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • http://mohacad.com/images/free-roblox-gift-card_GM431946152.pdfIn PDF document text
    • http://mohacad.com/images/free-coin-and-spin-for-coin-master_GM406889139.pdfIn PDF document text
    • http://mohacad.com/images/free-robux-rewards_GM431946152.pdfIn PDF document text
    • http://mohacad.com/images/hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://mohacad.com/images/free-robux-just-click_GM431946152.pdfIn PDF document text
    • http://mohacad.com/images/free-spins-coin-master-october-13-2021_GM406889139.pdfIn PDF document text
    • http://mohacad.com/images/roblox-hack-ios_GM431946152.pdfIn PDF document text
    • http://mohacad.com/images/how-many-levels-are-in-coin-master_GM406889139.pdfIn PDF document text
    • http://mohacad.com/images/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • http://mohacad.com/images/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • http://mohacad.com/images/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
    • http://mohacad.com/images/free-robux-discord_GM431946152.pdfIn PDF document text
    • http://mohacad.com/images/coin-master-hack-pro_GM406889139.pdfIn PDF document text
    • https://youtuIn 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_off000048ba.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48BA 30176 bytes
SHA-256: 8243c5b92015cc8064d0eb18a86bedc04aaee270630d76d5455f6fbb924bc860
font_01_sfnt_off00008b62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B62 17756 bytes
SHA-256: ec9c232ae7f2e9c61777f8d0f8676ce95e90a2d5950c4a4b4c910214713d299f

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