Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1e7356039a02ee1…

MALICIOUS

PDF

35.4 KB Created: 2021-05-25 12:05:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 3bfb9c1761ada847073e386a066aa39b SHA-1: bb316c10fa4154e4c6936a9f825c2827a9b9342b SHA-256: f1e7356039a02ee180c423d566c7a3152479f0a5f7b27c8367bf34df0951d976
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links designed to lure users into downloading more malicious PDFs by promising game cheats and free spins. The primary redirector URL, https://netcdn.xyz/app/406889139/coin-master-free-daily-spins-and-coins-game-hack, is flagged as malicious. The document body and embedded links strongly suggest a phishing or scam attempt to trick users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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-free-daily-spins-and-coins-game-hack In PDF document text
    • http://spentulib.com/search/repository/coin-master-free_GM406889139.pdfIn PDF document text
    • http://spentulib.com/search/repository/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://spentulib.com/search/repository/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://spentulib.com/search/repository/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://spentulib.com/search/repository/coin-master-free-cards-link_GM406889139.pdfIn 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
font_00_sfnt_off000032dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32DD 23656 bytes
SHA-256: a604a9906fd08461b2ca89dd0903960c73d8f30e8e19e9cd11c1df939ab3fdea
font_01_sfnt_off00006855.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6855 18480 bytes
SHA-256: 88c5a76ee56cb7e28b06cf9e90949f5a0fd4a72b6dddac6cb3c8c84aebf5620b

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