Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a382737c6f32d01…

MALICIOUS

PDF

36.4 KB Created: 2021-05-22 17:04:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-02
MD5: fd9dd048f1cc0b483f391c3be474b57d SHA-1: f54c897ca0e7e7cc6a602c8356b8400640ce7f83 SHA-256: 1a382737c6f32d017d35ad3795fd644bb6bc055ef7623515e0a86ab2dccf473c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirector infrastructure, specifically promoting 'free generator / game hack' lures. The document body reinforces this by including phrases like 'Can You Get Minecraft For Free' and 'CLICK HERE TO ACCESS MINECRAFT GENERATOR', alongside numerous URLs pointing to potentially malicious content. The presence of embedded URLs and the ML classifier's high confidence score further support the malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

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/can-you-get-minecraft-for-free-game-hack In PDF document text
    • http://optiquedelavaunage.com/images/what-is-exploiting-in-roblox_GM431946152.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/free-robux-with-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/free-robux-no-download_GM431946152.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/how-to-get-free-robux-games_GM431946152.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_002_off000036da.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x36DA 24456 bytes
SHA-256: 0e462a1430c3fb33671b30040597639aff488e0bb94f6b471f4b1883a9edaa41
font_01_sfnt_off00006dc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DC7 18012 bytes
SHA-256: 86c2b624a8a37ca41486e489d8c9cfdbe0e5db220f130324253b481d58b189c6

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