Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e348160e2e8007a…

MALICIOUS

PDF

37.0 KB Created: 2021-05-20 14:19:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 95b22ace3798176d4cd5985790af2e1a SHA-1: c28d3a608a0556f227280209952e1bf7c6de549d SHA-256: 4e348160e2e8007a92db0e7c65e7ae4b8893f19fd9b8c57d1fbecbee12c89ba7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and potentially unwanted content, such as game hacks and free spin lures. The heuristic firings indicate that the document is designed to redirect users to malicious infrastructure. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to trick users into downloading further malicious content.

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/479516143/minecraft-bedrock-edition-free-game-hack In PDF document text
    • https://serviceaccctvjogja.com/ckfinder/userfiles/files/100-free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://serviceaccctvjogja.com/ckfinder/userfiles/files/make-free-robux_GM431946152.pdfIn PDF document text
    • https://serviceaccctvjogja.com/ckfinder/userfiles/files/free-minecraft-generator_GM479516143.pdfIn PDF document text
    • https://serviceaccctvjogja.com/ckfinder/userfiles/files/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • https://serviceaccctvjogja.com/ckfinder/userfiles/files/free-minecraft-svg-cutting-files_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_off00003525.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3525 25616 bytes
SHA-256: 88a874e2ee873ee85e09e1dca50fe9d8dcbc12d7b5fea75c97c96f3762fb2806
font_01_sfnt_off00006f76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F76 18268 bytes
SHA-256: 0b29718dce26c4d1fb8eff562362f22d55d4276ac23c5c88aa1b07f7376859fd

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