Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b7681f5ca879979…

MALICIOUS

PDF

37.7 KB Created: 2021-05-17 12:01:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a623114047f4a6c66cfb0f0fb77df2a2 SHA-1: 7ce443cbb03d0d147bda16e902554c0cdad7e4bd SHA-256: 2b7681f5ca879979ffc2e27baa3cb90e3116dfa002c1bcfbc3f2c0b3df11f644
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a 'free generator / game hack' for Coin Master, directing users to a suspicious URL. This URL is flagged as a known malicious redirector, indicating a phishing or scam attempt. The document's structure and embedded link strongly suggest a social engineering tactic to trick users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier clean score 0.0334

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/coin-master-links-for-today-game-hack In 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_003_off0000384a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x384A 25296 bytes
SHA-256: 51f313e222a6ff8ceb7e79d73c237cfe81b0e609dd57f5a1eb1f36b57fa9e2aa
font_01_sfnt_off0000722e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x722E 18232 bytes
SHA-256: 79bece74db2dd822c76612a1664280e186053a2a893c50b912a800105546df15

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