Malicious PDF — malware analysis report

Static analysis result for SHA-256 185eacd145ebb0c0…

MALICIOUS

PDF

39.3 KB Created: 2021-05-23 06:42:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a7bc2114c4d08e32131f1602aa8458be SHA-1: 661629393142dd10c6daf1176cad91ff47cba2ff SHA-256: 185eacd145ebb0c03846fecb36531595d04ceeaacfdbaad0b10453570d164f18
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to a 'free Robux generator' lure, identified by heuristics as a malicious redirector. The document body and embedded links suggest a phishing or scam attempt to trick users into visiting malicious sites. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9738

Heuristics 3

  • 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.
  • 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/how-to-get-free-robux-on-computer-game-hack In PDF document text
    • http://kermas.eu/images/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/how-to-get-daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://kermas.eu/images/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/free-fans-on-tiktok_GM835599320.pdfIn PDF document text
    • http://kermas.eu/images/free-minecraft-realms-to-join_GM479516143.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_off000034d7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x34D7 25416 bytes
SHA-256: d09262a2fa3036a588d5045e6b129776b16f4a116ce0f180bb7b4834af5c2703
font_01_sfnt_off00006f7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F7F 5596 bytes
SHA-256: 9a13c2580265a78e8a7257496a31ee0055738af7e20a5661c2902efe4bf05ce5
font_02_sfnt_off00007c26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C26 18716 bytes
SHA-256: 2c87d7c74b7bcd7fade186f781764640e14dfaf637cd5e280742c056ede93ace

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