Malicious PDF — malware analysis report

Static analysis result for SHA-256 2abad6b2c82ec608…

MALICIOUS

PDF

43.0 KB Created: 2021-05-14 00:05:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: c6bbd46de1d45f35cf44213ebc259064 SHA-1: 65691b441c34187e5feb99c928ff04b829f4b373 SHA-256: 2abad6b2c82ec608cd73f1224ff0a9051e7c3653939049e038687cdb1b46cef0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to external resources, including a primary link identified as a malicious redirector for game hacks. The document body, though partially corrupted, contains text related to obtaining free game items and includes the same malicious URL. The presence of these lures and the ML classification strongly indicate a malicious intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/how-to-get-minecraft-for-free-on-laptop-game-hack In PDF document text
    • http://atrax.hr/files/bux-free-robux_GM431946152.pdfIn PDF document text
    • https://www.atrax.hr/files/descargar-coin-master-hackeado_GM406889139.pdfIn PDF document text
    • https://www.atrax.hr/files/free-robux-android_GM431946152.pdfIn PDF document text
    • http://atrax.hr/files/pasos-para-hackear-coins-master_GM406889139.pdfIn PDF document text
    • https://www.atrax.hr/files/generator-robux_GM431946152.pdfIn PDF document text
    • https://www.atrax.hr/files/coin-master-32-mod-hack-unlimited_GM406889139.pdfIn PDF document text
    • https://www.atrax.hr/files/free-coins-coin-master-blog_GM406889139.pdfIn PDF document text
    • http://atrax.hr/files/websites-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://www.atrax.hr/files/minecraft-free-version-pc_GM479516143.pdfIn PDF document text
    • https://www.atrax.hr/files/minecraft-skins-free-girl_GM479516143.pdfIn PDF document text
    • http://atrax.hr/files/coin-master-free-spins-for-iphone_GM406889139.pdfIn PDF document text
    • http://atrax.hr/files/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://atrax.hr/files/free-robux-gift-card-generator_GM431946152.pdfIn PDF document text
    • http://atrax.hr/files/free-online-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.atrax.hr/files/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • http://atrax.hr/files/como-hackear-coin-master-iphone_GM406889139.pdfIn PDF document text
    • https://www.atrax.hr/files/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://www.atrax.hr/files/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.atrax.hr/files/coin-master-connection-lost_GM406889139.pdfIn PDF document text
    • https://www.atrax.hr/files/minecraft-realms-free-codes_GM479516143.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_off0000485a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x485A 27792 bytes
SHA-256: 5bbac8ab8ab0d2a22d4bd1f5f7364afbfea02c069248a2c3dee4d37f46a25138
font_01_sfnt_off00008694.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8694 18052 bytes
SHA-256: e6c5d90690ade955def54cc348d22ccb2455245c015e9db3c0b43713c916dea5

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