Malicious PDF — malware analysis report

Static analysis result for SHA-256 ada28d1e3d500d6b…

MALICIOUS

PDF

41.7 KB Created: 2021-04-30 13:24:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 05d2375013adc022bad8811d1e21f8e1 SHA-1: a7a136a8164b0478b97da5938655acf255204d45 SHA-256: ada28d1e3d500d6bbe3919a5b7355d458f67ef18e4b89098f263a68c34bed0d7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically advertising 'free generator / game hack' lures. The document body and embedded links strongly suggest a phishing attempt to trick users into visiting these malicious sites, likely to download further malware or steal credentials. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

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/431946152/1-most-best-free-hack-executor-in-roblox-ever-game-hack In PDF document text
    • http://beesengineering.com/uploaded_files/userfiles/files/roblox-free-redeem-card-code-2021.pdfIn PDF document text
    • http://beesengineering.com/uploaded_files/userfiles/files/chat-hack-roblox-script.pdfIn PDF document text
    • http://beesengineering.com/uploaded_files/userfiles/files/free-maps-roblox.pdfIn PDF document text
    • http://beesengineering.com/uploaded_files/userfiles/files/how-to-hack-roblox-accounts-2021-april.pdfIn PDF document text
    • http://beesengineering.com/uploaded_files/userfiles/files/roblox-hack-weg-machen-aimbot.pdfIn PDF document text
    • http://beesengineering.com/uploaded_files/userfiles/files/access-flamethrower-for-free-roblox-car-crushers-2.pdfIn PDF document text
    • http://beesengineering.com/uploaded_files/userfiles/files/roblox-om-nom-dimulator-hack.pdfIn PDF document text
    • http://beesengineering.com/uploaded_files/userfiles/files/free-pins-for-robux.pdfIn PDF document text
    • http://beesengineering.com/uploaded_files/userfiles/files/how-to-get-a-free-gamepass-on-roblox-2021.pdfIn PDF document text
    • http://beesengineering.com/uploaded_files/userfiles/files/roblox-operation-scorpion-hack.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_off000043a3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x43A3 26412 bytes
SHA-256: 4df972fb18ebf1e5c86b27eae0bd41c05056a7b80e3afb0f7f9a763d51b4fbb9
font_01_sfnt_off00007f3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F3C 19008 bytes
SHA-256: 41c4d942e5d8fd2e25d916d05968e2e779c7f048b8d11cf659c989dd8ce38143

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