Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a4d31aa1bb04d3c…

MALICIOUS

PDF

43.0 KB Created: 2021-05-10 15:18:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: d9fd0262e7016a47fe76467294104979 SHA-1: 6f4ab2320c778c82d51f0ea9ed6fc88bf71d3baf SHA-256: 0a4d31aa1bb04d3cd0eb57a3e74a098e4b71da446089cbc728d09464719c334b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, masquerading as game hacks. The document body explicitly mentions 'Coin Master Hack Ios 12' and includes a call to action to 'CLICK HERE TO ACCESS COIN MASTER GENERATOR', further reinforcing the lure. The embedded URLs and the heuristic firings strongly indicate a phishing or scam attempt designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9836

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/406889139/coin-master-hack-ios-12-game-hack In PDF document text
    • http://agroturismoarkaia.com/images/daily-coin-master_GM406889139.pdfIn PDF document text
    • http://agroturismoarkaia.com/images/aristois-minecraft-hack_GM479516143.pdfIn PDF document text
    • http://agroturismoarkaia.com/images/coin-master-pc-hack_GM406889139.pdfIn PDF document text
    • http://agroturismoarkaia.com/images/easiest-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://agroturismoarkaia.com/images/roblox-hack-me_GM431946152.pdfIn PDF document text
    • http://agroturismoarkaia.com/images/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://agroturismoarkaia.com/images/how-to-get-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://agroturismoarkaia.com/images/roblox-adopt-me-hack_GM431946152.pdfIn PDF document text
    • http://agroturismoarkaia.com/images/minecraft-windows-10-edition-hacks_GM479516143.pdfIn PDF document text
    • http://agroturismoarkaia.com/images/how-do-you-get-roebucks-for-free_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00003efc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3EFC 27276 bytes
SHA-256: 0c01522fcaa3d3a8afdbe6de09342548eac88d99dd480b23b27d57e246faf011
font_01_sfnt_off00007d37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D37 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off000086e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86E8 17948 bytes
SHA-256: be98af2c8b2a8f415c1138fe429d49ae8e82ec0e8d97b7102e90f5e5fc516930

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