Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b4b0a9041ede668…

MALICIOUS

PDF

39.0 KB Created: 2021-05-24 21:34:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 88f5c4ea5b34acbb60e483420e1a5cd5 SHA-1: 54ddf0662f3a837b24fefbc63bc5b5b8ed7e2a2a SHA-256: 8b4b0a9041ede6682d9d082a95a8f8f9cc522eef91097601dbe243d8aa91013c
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a lure for a "free generator / game hack" and embeds a URL pointing to known malicious redirector infrastructure. The document body explicitly contains the phrase 'CLICK HERE TO ACCESS COIN MASTER GENERATOR' and the malicious URL, indicating a social engineering attempt to trick the user into visiting a potentially harmful site. No scripts were extracted, but the embedded URL is the primary indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier clean score 0.0134

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/free-spins-for-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_002_off00002cfe.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2CFE 29344 bytes
SHA-256: 60292d9f6d6c8ad009ed15b1ba603c81072130d66ecdc4c402a38cc69d2b183f
font_01_sfnt_off00006ec3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EC3 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00007875.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7875 17884 bytes
SHA-256: 7a686c540965cac69e1923dfbb6a78ce3f92ec60dbbf6836da21cbb58cd4d6cc

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