Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a6e1b7a44c49c4e…

MALICIOUS

PDF

37.7 KB Created: 2021-05-22 16:05:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 57340f827250e7efaa3f2c0da5aea260 SHA-1: 310e92ab3d85c91d4d6691fef11818e785518d2b SHA-256: 1a6e1b7a44c49c4e7c1a1dbec1a96be24ccf8b192fa37fb94ef31254b0ebf71e
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains heuristics indicating it is a lure for a "free generator / game hack" scam, directing users to a known malicious redirector URL. The document body, though partially obfuscated, contains text related to "Free Robux Scam" and the malicious URL. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest an attempt to redirect users to a malicious website, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier clean score 0.0739

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/free-robux-scam-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_002_off0000376b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x376B 25720 bytes
SHA-256: 0803af53401c10b5425cd283a3835ff43506f044f16a3b64a12e12019d4dcaae
font_01_sfnt_off000071f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71F4 18500 bytes
SHA-256: 24c52a02bd601b0a5cf869202747d5c16280e540771a7d3b3f68f33a5cbf68e3

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