Malicious PDF — malware analysis report

Static analysis result for SHA-256 9171105c4ff277c8…

MALICIOUS

PDF

42.6 KB Created: 2021-06-11 00:00:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 30ee210baf3aebb17d8a0cb1570f0319 SHA-1: 8518948dea850fa810c5bebe0a022f01938b0949 SHA-256: 9171105c4ff277c899da8b0d6fa7006f7db6dd200da60e2d40a31e7303c73de9
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link T1553.005 Security Software Installation

The PDF document contains a lure for a 'free Robux generator' and explicitly instructs the user to disable security software, indicating a malicious intent to bypass defenses. The primary malicious URL points to a game hack generator, which is a common social engineering tactic. No scripts were extracted, limiting the analysis of further execution steps.

Machine Learning

  • Nyx PDF Classifier clean score 0.0285

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector high 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.
  • Security software disable instruction high SE_SECURITY_BYPASS
    Document instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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.tw/app/431946152/how-to-get-free-robux-using-promo-codes-2021-game-hack PDF link annotation
    • 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_off00003cd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3CD5 25080 bytes
SHA-256: 71e23a667aea931f7f6847fa1bf8ffcf324c3d11193abde17cb675354e570d6c
font_01_sfnt_off00007670.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7670 2828 bytes
SHA-256: db1860fd79a3f2cbe32e2bada3ba4c68a2d581b7a24294387cd777233cc9cef6
font_02_sfnt_off00008026.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8026 19868 bytes
SHA-256: 00bc666d1fce8ee5af0243abfd6ec37715ba2f442712eef1d0d6d71f809aa151

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