Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3c3ee67abba85e7…

MALICIOUS

PDF

36.5 KB Created: 2021-05-12 23:19:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: b5d32df5b7d6e4d4b44f2ac30802c73c SHA-1: 4d027edb37662e940323bdc04bfd4aadb923671e SHA-256: d3c3ee67abba85e753933d283bd630769228c0eedcf248f0b68da9af209de500
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a critical heuristic firing for a game hack redirect lure, pointing to a known malicious URL. The document body also explicitly contains the malicious URL and a call-to-action phrase. This indicates a phishing attempt to redirect users to a potentially harmful website.

Machine Learning

  • Nyx PDF Classifier clean score 0.0312

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-promo-codes-for-coin-master-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 3

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_003_off00003480.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3480 25164 bytes
SHA-256: 097342a6e4fefca8f394397ddce2bfead562e7f8c4b3bc518971cb4eb087e99f
font_01_sfnt_off00006d89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D89 18296 bytes
SHA-256: 746e171d2ae2ee44530a07cf254fc2080fa675031ecc49e9e6798833521e600e

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