Malicious PDF — malware analysis report

Static analysis result for SHA-256 263238a89b4e7136…

MALICIOUS

PDF

35.9 KB Created: 2021-05-22 07:44:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: cfac18b56422e7b5c83ee10c37358ad2 SHA-1: 1adf7667439f8288d1532156a6d487e2ab07d848 SHA-256: 263238a89b4e71367160784789f6aafca228b11c4d998b47e651c7676d3e1b74
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 advertising 'game hacks' and 'free currency'. The primary malicious URL identified is https://netcdn.xyz/app/431946152/adopt-me-roblox-hacks-game-hack. The document body and heuristics indicate a lure for potentially unwanted applications or further malicious content, disguised as a generator or hack. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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/adopt-me-roblox-hacks-game-hack In PDF document text
    • http://elektrofahrspass.de/images/today-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://elektrofahrspass.de/images/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://elektrofahrspass.de/images/how-to-get-roebucks_GM431946152.pdfIn PDF document text
    • http://elektrofahrspass.de/images/minecraft-pe-hack-client_GM479516143.pdfIn PDF document text
    • http://elektrofahrspass.de/images/coin-master-free-spins-gratis_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003123.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3123 25812 bytes
SHA-256: 3180b9f4a159f561731eb0cc2e5d8ca752b43242a7a4b99ced0f7482f651fef8
font_01_sfnt_off00006927.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6927 18832 bytes
SHA-256: 20cc3fc4f8bba0f9e43a0219006a1a5053a8a449a15fb7b1ac4ebea58af7d5b3

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