Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb980f8f7e7f56c1…

MALICIOUS

PDF

37.1 KB Created: 2021-04-28 16:07:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 6594f7a15920667afc250f254c3622d1 SHA-1: a2c171d320a36c3e126d34d8c83b7b82fc31ec71 SHA-256: eb980f8f7e7f56c101ef7709db37056d8c63f42d591c8efec936f1fe07531f0a
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains heuristics indicating it's a lure for a 'game hack' and links to known malicious redirectors. The document body explicitly contains a call-to-action to 'CLICK HERE TO ACCESS ROBLOX GENERATOR' and a URL pointing to what appears to be a malicious PDF. The primary malicious URL identified is https://netcdn.xyz/app/431946152/how-to-hack-arsenal-roblox-game-hack, which is likely used to host or redirect to a second-stage payload.

Machine Learning

  • Nyx PDF Classifier clean score 0.0490

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/how-to-hack-arsenal-roblox-game-hack In PDF document text
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/imperium-roblox-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_off00003561.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3561 25064 bytes
SHA-256: 9f4a550aa70bdc1e26d4ecbd0bed46b9c30d02eb7bab73d2ad46e5eca8372772
font_01_sfnt_off00006f4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F4D 18344 bytes
SHA-256: e23f2e0ae72cffdd95061aedeeb941da13de15b19cef14c48990430b22f74eae

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