Malicious PDF — malware analysis report

Static analysis result for SHA-256 7107cedff8586317…

MALICIOUS

PDF

40.8 KB Created: 2021-05-19 06:01:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 55c4833466de0aa9b708c9c0325104fe SHA-1: a2b176e3ca6a67fdf7703fa4a857b7e0de0a2b11 SHA-256: 7107cedff85863178ce2a586e06668b03f70ae5cf0f56ab90c0ce9c777bfc771
130 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a game hack redirector lure, pointing to malicious infrastructure. The document body also contains text and a call-to-action phrase ('CLICK HERE TO ACCESS ROBLOX GENERATOR') consistent with a phishing or scam attempt. The embedded URL is the primary indicator of malicious activity, likely leading to a further stage of compromise.

Machine Learning

  • Nyx PDF Classifier clean score 0.0128

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/roblox-robux-hack-generator-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
font_00_sfnt_off0000347c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x347C 24788 bytes
SHA-256: ed5f513ee65b6ae6cf378aec066137f26b4191e5c3bf90dd5b71f2c6ee69dbd5
font_01_sfnt_off00006d3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D3B 6636 bytes
SHA-256: 62075f0fe13502d46afb6e55e83d440c29ef4988399537df1f86e7653ce3b744
font_02_sfnt_off00007d48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D48 18428 bytes
SHA-256: bdac85b283ea9edec09d9f64e9cfc1f18bf7d6a92d05f58e23f3db2f02fbf028

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