Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fb2ea94ba79fdc6…

MALICIOUS

PDF

37.7 KB Created: 2021-05-23 04:41:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 6e8cad7543f4078659a34cbedcd4873c SHA-1: 0c291f4e1c70ed5aaeb83e9d16fe55c427241504 SHA-256: 0fb2ea94ba79fdc6b626bc8df7db1e5b5bd88170aea883b1b88455f50c3a3a02
130 Risk Score

Malware Insights

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

The PDF document contains multiple links to a known malicious redirector, disguised as a lure for free game currency. The document body explicitly mentions 'How To Get Free Robux For Real' and 'CLICK HERE TO ACCESS ROBLOX GENERATOR', indicating a phishing or scam attempt. The embedded links likely lead to further malicious content or malware download.

Machine Learning

  • Nyx PDF Classifier clean score 0.0076

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-get-free-robux-for-real-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00002c47.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2C47 25272 bytes
SHA-256: fdf1ef29a89ce3cd4f92e7405839cbe93ba4da17787776f6bb8a6173c7582643
font_01_sfnt_off00006725.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6725 2844 bytes
SHA-256: baad2f3f6808f4af03fa9398e38c580c8d846f7f773a947d8cc1f39b2753d31a
font_02_sfnt_off000070e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70E7 18584 bytes
SHA-256: 4c8fb6f4ba3d8fd1a53aecf8e038afdea7cc6760123f6d2281f23f521b1068d8