Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d55073a95a6df80…

MALICIOUS

PDF

34.2 KB Created: 2021-07-03 21:00:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 6bd8d1bc1790abfd819ca671e13e1256 SHA-1: be4630a5f6367cab12363b96cfe88975165ef535 SHA-256: 3d55073a95a6df80a629805132d4f5b294fe680ce48fcb61290dd9a9689f1c7f
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a prominent link and text related to obtaining free spins for Coin Master, a common lure for malicious content. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' directly indicates this deceptive tactic. While no scripts were extracted, the embedded URL is the primary indicator of compromise, likely leading to a phishing or malware download site.

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.tw/app/406889139/offers-to-get-free-spins-in-coin-master-game-hack PDF link annotation
    • http://lib.stimykpn.ac.id/repository/get-free-roblox-trades_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/coin-master-hack-mobile_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-hack-roblox-one-punch-man_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-mad-games-hack_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-50-dollar-card-free_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/easiest-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/free-minecraft-realms-to-join_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-hack-2021-no-human-verification_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-exploit-scripts-free-download_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/rbxcity-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-com_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-free-spins-may-11-2021_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/free-coins-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-robux-ohne-veriefizierung_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-black-wings-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-hack-robux-no-survey-2021_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-retail-tycoon-hack-no-cheat-engine_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/cheat-engine-roblox-crash_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-robux-hack-2021-easy_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-coin-master-gold-cards_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_off000030f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30F9 22596 bytes
SHA-256: 1397eb6e30ac146fb037d9ed67680b1a414cb242c5dec96bffe5606ad30716f6
font_01_sfnt_off00006370.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6370 18176 bytes
SHA-256: a5dda6ecc9550c88ef854abac2de0c7419869471da9a3b20b0ae64a03b2462f9

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