Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc9e8553769b7182…

MALICIOUS

PDF

36.5 KB Created: 2021-05-21 14:32:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 46149871b0c2b8c0664395fd15d99698 SHA-1: d68d2914c3f5ba7c2c124e48b8d4915a5d5bf7fb SHA-256: bc9e8553769b7182d4e1e4f6172bad3a3ee46222650a73d573a4ccbc5c845d3c
160 Risk Score

Malware Insights

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

The PDF contains multiple links and a call-to-action phrase, directing users to a URL associated with malicious redirector infrastructure. The heuristic PDF_GAME_HACK_REDIRECT_LURE specifically identifies the lure as a 'free generator / game hack', indicating a social engineering tactic. While no scripts were explicitly extracted, the nature of the PDF and its embedded links suggest it is designed to exploit users through deceptive content, likely leading to further malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

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-app-real-game-hack In PDF document text
    • http://radoszyna.pl/images/how-to-hack-coin-master-using-es-filer_GM406889139.pdfIn PDF document text
    • http://radoszyna.pl/images/roblox-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://radoszyna.pl/images/john-doe-roblox-hacker_GM431946152.pdfIn PDF document text
    • http://radoszyna.pl/images/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://radoszyna.pl/images/roblox-lovenet_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_off000030b6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x30B6 25716 bytes
SHA-256: fdc8890496657b80ff659b2e8331875ddd0035f8214f982c04cc24aa04ab8029
font_01_sfnt_off00006c9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C9C 18492 bytes
SHA-256: 9e447b6d8b47d61e54db9515b6598511f2c2f765926adb3e35dae1cd8ee44e1f

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