Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a6f260411c12f57…

MALICIOUS

PDF

38.7 KB Created: 2021-05-17 16:28:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: ef0148bb209e1dd60d4d0d61716aa85f SHA-1: 0575e9c85252b148cad4bef4f6a23e6ce2a825ea SHA-256: 2a6f260411c12f574dd598c095cd801737e262469daaa87087dba03fc6c002c0
130 Risk Score

Malware Insights

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

The PDF document contains a lure for 'free Robux' and a 'game hack', directing users to a malicious URL. This indicates a phishing or scam attempt, likely to monetize user engagement or deliver a secondary payload. The embedded URL is associated with known malicious redirector infrastructure.

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-do-you-get-free-robux-2021-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_off00003503.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3503 27820 bytes
SHA-256: 40e7f97eb5264a53089bc9655cba9496685a45f91c7e283719e9d072de928df8
font_01_sfnt_off000073b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73B2 19016 bytes
SHA-256: 7afc4835c6f8d200a546e15f78f642ba5dd88c8fac7df04bc3003dd1e9f7232a

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