Malicious PDF — malware analysis report

Static analysis result for SHA-256 27eb875f5776fb35…

MALICIOUS

PDF

40.5 KB Created: 2021-05-22 19:08:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1c0fad4225f8b5825bcee3b31e535cb3 SHA-1: 890e15b6d529301536742ee3d8fb491546f571f8 SHA-256: 27eb875f5776fb359dcaa4b52edb5ee77d4baf2dc43cceb2145630d7e138ab1a
160 Risk Score

Malware Insights

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

The PDF document contains multiple links to known malicious redirector infrastructure, specifically promoting 'free Robux' scams. The document body and heuristics indicate a lure for game-related cheats or generators, which is a common social engineering tactic. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest it's designed to redirect users to potentially malicious sites that may host further exploits or phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7718

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-scams-game-hack In PDF document text
    • http://magistrinfo.ru/images/you-promised-my-son-free-robux_GM431946152.pdfIn PDF document text
    • http://magistrinfo.ru/images/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://magistrinfo.ru/images/minecraft-free-install_GM479516143.pdfIn PDF document text
    • http://magistrinfo.ru/images/pasos-para-hackear-coins-master_GM406889139.pdfIn PDF document text
    • http://magistrinfo.ru/images/roblox-avatar-maker-free_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003406.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3406 27020 bytes
SHA-256: bad49c852be80dc9b19e151c587588591529b3ab5a4068968dd6bf9f162d0a80
font_01_sfnt_off000072ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72AD 2832 bytes
SHA-256: 77ae1c4cffa647a8fd533dfa4102e94364989f9e80b9cd131876e9d1005899a2
font_02_sfnt_off00007c5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C5E 18500 bytes
SHA-256: f6eebadb3de4af7ab0205057cc55fc1daf9397692da1370c2a19d2d749ad11f1

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