Malicious PDF — malware analysis report

Static analysis result for SHA-256 b4e70756688c497c…

MALICIOUS

PDF

37.5 KB Created: 2021-05-16 19:17:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 7ed6f0fd3d836270fac1a47344b24e69 SHA-1: 6075b47942122f5cc4530c7c93493f15ec8094da SHA-256: b4e70756688c497c5f69027da0012ad993b4be03a5d6baac7528fabcb4021dba
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that lead to a known malicious redirector infrastructure, disguised as a 'free generator / game hack'. The document body also contains phrases like 'CLICK HERE TO ACCESS ROBLOX GENERATOR', indicating a phishing or scam attempt. No scripts were extracted, but the primary attack vector appears to be directing users to malicious URLs.

Machine Learning

  • Nyx PDF Classifier clean score 0.0334

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-make-roblox-clothes-for-free-game-hack In 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_off00003275.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3275 26240 bytes
SHA-256: 3b82dfab2e36891227f1f5c5f08c8512aef0494f213b3f3f033b752a4b20d454
font_01_sfnt_off00006f79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F79 18976 bytes
SHA-256: 75869b94c2b17b25dac59f0b0f7f9ff270f85e9e7170da1a335b6396ed3bda83

Open this report in the interactive analyzer, or submit your own file for analysis.