Malicious PDF — malware analysis report

Static analysis result for SHA-256 2811141141d19137…

MALICIOUS

PDF

37.6 KB Created: 2021-05-21 12:00:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d2fa784ed61e03013797f41460b7b1af SHA-1: 91ec665bb903e576b1e63cca1b5be9b6e325646c SHA-256: 2811141141d1913757d78b1a2fe256ead045bf52e28000f746c0b869da4451ea
160 Risk Score

Malware Insights

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

The PDF contains multiple links to known malicious redirectors, specifically promoting 'free Robux' and 'game hacks' to entice users. The document body and embedded links strongly suggest a phishing or scam attempt, likely leading to further malware download or credential harvesting. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of malicious redirection and potential exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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-games-on-roblox-game-hack In PDF document text
    • http://www.friendshiptransport.net/images/bloxawards-com-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://www.friendshiptransport.net/images/free-robux-no-human-verify_GM431946152.pdfIn PDF document text
    • http://www.friendshiptransport.net/images/lastrick-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.friendshiptransport.net/images/freerobuxhack-us-2021_GM431946152.pdfIn PDF document text
    • http://www.friendshiptransport.net/images/minecraft-hack-mod_GM479516143.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_off000033ae.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33AE 26144 bytes
SHA-256: 01159a6f38eb29b2161dcc08e3c8367fc83a257d328a42949edc10414ed44eba
font_01_sfnt_off0000710f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x710F 18576 bytes
SHA-256: 121d272924a8948b6bfdf19867642727f57edf659587de43eb46571e5003926c

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