Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe400ac900c14910…

MALICIOUS

PDF

43.0 KB Created: 2021-05-10 23:05:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 3e011e407f4d143b0296aabd88b927f4 SHA-1: d29322e489b3b105c72dd64cd5012ae448cc1ca7 SHA-256: fe400ac900c14910ced4e4b4fabbed8b4212b95af64ff71039a90566e001f5ab
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to known malicious infrastructure, specifically promoting 'free Robux' and 'game hacks'. The ML classifier strongly flagged this PDF as malicious, and the presence of redirector links indicates a phishing or scam attempt. While no scripts were explicitly extracted, the PDF structure itself facilitates the redirection, aligning with T1566.001 (Spearphishing Attachment) as a likely initial access vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/431946152/free-robux-no-human-verification-no-survey-game-hack In PDF document text
    • http://moneymaker-gold.de/files/hacker-minecraft-song_GM479516143.pdfIn PDF document text
    • http://moneymaker-gold.de/files/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://moneymaker-gold.de/files/how-to-robux_GM431946152.pdfIn PDF document text
    • http://moneymaker-gold.de/files/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
    • http://moneymaker-gold.de/files/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://moneymaker-gold.de/files/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • http://moneymaker-gold.de/files/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://moneymaker-gold.de/files/coin-master-hack-app-for-ios_GM406889139.pdfIn PDF document text
    • http://moneymaker-gold.de/files/coin-master-free-bonus_GM406889139.pdfIn PDF document text
    • http://moneymaker-gold.de/files/hack-coin-master-ios-download_GM406889139.pdfIn PDF document text
    • http://moneymaker-gold.de/files/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://moneymaker-gold.de/files/coin-master-time-speed-hack_GM406889139.pdfIn PDF document text
    • http://moneymaker-gold.de/files/game-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://moneymaker-gold.de/files/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://moneymaker-gold.de/files/cmaster-club-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://moneymaker-gold.de/files/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • http://moneymaker-gold.de/files/coin-master-hack-tool-v1-9_GM406889139.pdfIn PDF document text
    • http://moneymaker-gold.de/files/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://moneymaker-gold.de/files/robux-app_GM431946152.pdfIn PDF document text
    • http://moneymaker-gold.de/files/roblox-army-robux_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_003_off0000488c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x488C 25624 bytes
SHA-256: 31fa0e69b5baab8ec75fc69b9758d5a822873ecc6f525055a15581593bfcdd2c
font_01_sfnt_off0000834f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x834F 19156 bytes
SHA-256: 339d1e55aee7c6169fc9e26e1541ea9d6c779f781f53a8c1d652dbe4fbeac478

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