Malicious PDF — malware analysis report

Static analysis result for SHA-256 9acd6727d7681946…

MALICIOUS

PDF

36.1 KB Created: 2021-05-22 10:07:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 20fab706e56720e10145a843c4f6194d SHA-1: ec5a60d5048cab87a57cfd799b5a0ca21f17c21f SHA-256: 9acd6727d76819462c65ad618d85901c59d2c65455649f9bb614c67f61e2f598
168 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to malicious redirectors, disguised as "free generators" or "game hacks" to lure victims. The document body also contains phrases like "CLICK HERE TO ACCESS MINECRAFT GENERATOR" and links to other suspicious PDF files, reinforcing the lure. While no scripts were explicitly extracted, the presence of embedded URLs and the ML classifier's high confidence score indicate malicious intent, likely leading to further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

Heuristics 5

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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/free-modded-minecraft-server-game-hack In PDF document text
    • http://behsanroshd.com/images/free-free-robux_GM431946152.pdfIn PDF document text
    • http://behsanroshd.com/images/master-free-spin-and-coin-link_GM406889139.pdfIn PDF document text
    • http://behsanroshd.com/images/how-can-i-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://behsanroshd.com/images/robux-no-verification_GM431946152.pdfIn PDF document text
    • http://behsanroshd.com/images/free-tiktok-fans_GM835599320.pdfIn PDF document text
    • https://education.minecraftIn 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_off0000351d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x351D 24552 bytes
SHA-256: 8b4ce95c725dccd159e9308b711cb8a6c6570070f76fb846295988e53fbc85d9
font_01_sfnt_off00006caf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CAF 18000 bytes
SHA-256: 088756902f929cbb0d1c0fa5d7f6f3d7dd891fd3cb3329064cb278e0751f8302

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