Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cead5c7c313cda1…

MALICIOUS

PDF

38.8 KB Created: 2021-05-21 12:33:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: fba9e77fa9be5d35a5a01a8a8c5392d0 SHA-1: 191d7c818b7d57b5f58bc811c15f89e9cdfe12e2 SHA-256: 7cead5c7c313cda1eaa7ca3f862c734bddd30b6ea62eafa4f9a991ffa0f3c21a
160 Risk Score

Malware Insights

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

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and cheats. The primary redirector URL is https://netcdn.xyz/app/479516143/minecraft-windows-10-hacks-game-hack, which is associated with a lure for free game generators. The document body also contains references to these lures and other suspicious PDF files hosted on shoruq.sch.ae, suggesting a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9476

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/479516143/minecraft-windows-10-hacks-game-hack In PDF document text
    • http://shoruq.sch.ae/userfiles/files/hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/robux-free-com_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/minecraft-pe-free-apk_GM479516143.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/more-robux_GM431946152.pdfIn 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_off000034ca.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x34CA 28312 bytes
SHA-256: 2d96a0eaf77521cf3f0baaab390ccfc5ec80aa84eb1efbf2c54b6ff0abbdc8a5
font_01_sfnt_off00007546.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7546 18696 bytes
SHA-256: 14f86b407040f424958936cb2b2b49b26067a8980bd50a77917f0563cc1bff87