Malicious PDF — malware analysis report

Static analysis result for SHA-256 8bfc1a7905cd3e49…

MALICIOUS

PDF

39.8 KB Created: 2021-05-16 05:42:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2c49fd8082bf8ce975e02b279e6389ea SHA-1: ed9e401ccf5f858d48cdb1600a3ffbe8b094c366 SHA-256: 8bfc1a7905cd3e4951ab7a428328592863daa638e7ccd7a36889097d0c2da57a
130 Risk Score

Malware Insights

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

The PDF document contains a critical heuristic firing for a game hack redirect lure, pointing to malicious infrastructure. The document body explicitly contains a call-to-action phrase and a URL that is known to be malicious. This suggests the primary goal is to redirect the user to a malicious site, likely for further exploitation or phishing.

Machine Learning

  • Nyx PDF Classifier clean score 0.0128

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/406889139/fb-coin-master-game-hack In 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000034d8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x34D8 25680 bytes
SHA-256: a78754c2a85be0e987416f6516699b735bef4c924f9aaa069d426f031ed649b7
font_01_sfnt_off00006ff7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FF7 3460 bytes
SHA-256: 27f6ee24b80a0c45a340e32027a43d6c3a7853aac96563eed14d58819399f6a8
font_02_sfnt_off00007b61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B61 17868 bytes
SHA-256: f1489871c2947706b970102a1ba18f5dafd787eb87058c7150b9e8ea04a481ae

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