Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b40c01660299467…

MALICIOUS

PDF

36.7 KB Created: 2021-05-10 15:41:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 29525922489508fc6242c944f2fcb1dc SHA-1: 8d3f5d842c2e39823a4fc5016d0a5f8e2c187bf7 SHA-256: 0b40c016602994673f297777af086728f5542a001985f6d5f0ab4431084d2abe
130 Risk Score

Malware Insights

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

The PDF document contains embedded links that redirect to known malicious infrastructure, specifically promoting a "Coin Master Hack Programers" generator. The presence of a "download button" lure and the redirection to a potentially harmful URL strongly suggest a phishing or scam attempt designed to trick users into visiting a malicious site. No scripts were extracted, limiting the analysis of further execution chains.

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/coin-master-hack-programers-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_off00003447.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3447 24972 bytes
SHA-256: 16d68a0baf9f2db8a6a58bc02bd5d151481336013454818c207abc267db8b464
font_01_sfnt_off00006dad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DAD 18416 bytes
SHA-256: 9b1b86d518bbcbecce2ac7037f2b10fa6fa9b3d2e28cf0c2cd03817ae8459785

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