Malicious PDF — malware analysis report

Static analysis result for SHA-256 3245fa2e8b26f48b…

MALICIOUS

PDF

37.3 KB Created: 2021-05-21 21:34:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: e52c393260c3c8bcf2f6e33b923accc0 SHA-1: 7e74f32e9548c48ea94437ad7a9a93aa22c1bcaa SHA-256: 3245fa2e8b26f48b945164deea113d9f77e0e7d3bcc21ee0de466083254419b2
160 Risk Score

Malware Insights

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

The PDF contains multiple links to known malicious redirectors and lures users with game-related content, suggesting a phishing or scam attempt. The embedded links, such as 'https://netcdn.xyz/app/479516143/free-minecraft-games-for-kids-game-hack', are designed to lead users to potentially harmful websites. The presence of a visual download button heuristic further supports the lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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/479516143/free-minecraft-games-for-kids-game-hack In PDF document text
    • http://familymn.com/images/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://familymn.com/images/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://familymn.com/images/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://familymn.com/images/free-robux-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://familymn.com/images/free-robux-codes-no-verification-2021_GM431946152.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
stream_002_off000032d8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32D8 27716 bytes
SHA-256: 055be81360875e462bffbd198ea2f27f9a6785f49c5387b0cf633b58616a4d64
font_01_sfnt_off000070ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70EF 18144 bytes
SHA-256: 13e7e5cd67c7f2718453187682e852ca38f83a1f5fffd311a8da849f95858a3e

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