Malicious PDF — malware analysis report

Static analysis result for SHA-256 4916ce6fd330635a…

MALICIOUS

PDF

36.8 KB Created: 2021-05-24 00:12:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 5f9fdef8a0dd95be83993df4709f21c8 SHA-1: dcb987a138c28f4fbc07aa73278f0163dc7baf7c SHA-256: 4916ce6fd330635ad46178f2ae6c6f7e085029d1449d5d87f902fca06d21f8ab
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirectors that host lures for free game currency or software, such as 'free generator / game hack' and 'CLICK HERE TO ACCESS ROBLOX GENERATOR'. These links ultimately point to malicious infrastructure, indicating a phishing or scam attempt. The document body and heuristics confirm the malicious redirection and lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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/mobihack-net-roblox-hack-game-hack In PDF document text
    • http://initiatiev.nl/images/free-roblox-acc_GM431946152.pdfIn PDF document text
    • http://initiatiev.nl/images/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • http://initiatiev.nl/images/tiktok-follower-bot-free_GM835599320.pdfIn PDF document text
    • http://initiatiev.nl/images/minecraft-free-download-2021_GM479516143.pdfIn PDF document text
    • http://initiatiev.nl/images/minecraft-fly-hack_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_002_off0000314b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x314B 25844 bytes
SHA-256: ed854a75635b73873de4c29835d2de37e2384dc2f24b220cf22a2bfeb0c1404c
font_01_sfnt_off00006d15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D15 18768 bytes
SHA-256: 4038ce5e3e0945c6cd976405ec29b4e5783f739c83bcd68413f286c6b350b233

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