Malicious PDF — malware analysis report

Static analysis result for SHA-256 092eef43c20cfd63…

MALICIOUS

PDF

40.9 KB Created: 2021-04-27 07:36:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: ac9d8a01c8b12f1d325efb9917242534 SHA-1: f68782c031a6631746ce85cda13b60d051e9507a SHA-256: 092eef43c20cfd638fef67079ba9a15908fab5c6ba7d18a52683851b51891f2b
168 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to a known malicious redirector disguised as a game hack generator. The document body and heuristics indicate a lure designed to entice users to click these links, likely leading to further malicious content or downloads. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/431946152/how-to-get-infinite-robux-hack-game-hack In PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/cheat-codes-vip-roblox-id.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/roblox-vehicle-simulator-shakedown-hack-glitch.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/free-black-clover-roblox.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/free-robux-card-generator-2021.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/roblox-adopt-me-money-cheat.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/roblox-royale-high-school-script-get-free-dimonds.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/roblox-hack-robux-game-you-achley-get-robux.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/robloux-free-robux.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/free-robux-gift-cards-reddit.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/cool-free-halloween-costumes-roblox.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_off00004065.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4065 26272 bytes
SHA-256: 1400755862367cb83e867811f9438794dacca65129fa67b9f036b7e992722a6c
font_01_sfnt_off00007cd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CD3 18636 bytes
SHA-256: 23a811c83a7a649d649fc0ad0323cb75e43cbdf11a5900289ebad6df8a666e2f

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