Malicious PDF — malware analysis report

Static analysis result for SHA-256 2da3620a95927be1…

MALICIOUS

PDF

42.6 KB Created: 2021-05-13 13:17:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: b8c3c8b9ea854065ecb54e6b916d34b2 SHA-1: dd1008690ca9fad59981d0c996180478cd7ddaea SHA-256: 2da3620a95927be1d871ea8a084d9f154d0dc0b0e16372be25d0d92595519a94
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and game hack lures, indicating a phishing or malware distribution attempt. The document body and embedded links suggest a lure for "Coin Master" or "Robux" generators, which are common pretexts for distributing malware or leading users to scam websites. No scripts were extracted, but the presence of malicious links and the ML classifier's high confidence score support this assessment.

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/406889139/coin-master-spin-free-game-hack In PDF document text
    • http://possumholler.us/images/robux-website_GM431946152.pdfIn PDF document text
    • http://possumholler.us/images/how-to-get-free-robux-without-downloading-apps-2021_GM431946152.pdfIn PDF document text
    • http://possumholler.us/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://possumholler.us/images/www-robux_GM431946152.pdfIn PDF document text
    • http://possumholler.us/images/coin-master-game-for-pc-free-download_GM406889139.pdfIn PDF document text
    • http://possumholler.us/images/how-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://possumholler.us/images/roblox-jailbreak-hack-download_GM431946152.pdfIn PDF document text
    • http://possumholler.us/images/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • http://possumholler.us/images/coin-master-hack-app-ios_GM406889139.pdfIn PDF document text
    • http://possumholler.us/images/to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://possumholler.us/images/daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://possumholler.us/images/robux-premium_GM431946152.pdfIn PDF document text
    • http://possumholler.us/images/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • http://possumholler.us/images/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://possumholler.us/images/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
    • http://possumholler.us/images/free-minecraft-server-hosting-with-plugins_GM479516143.pdfIn PDF document text
    • http://possumholler.us/images/free-100-robux_GM431946152.pdfIn PDF document text
    • http://possumholler.us/images/free-robux-co_GM431946152.pdfIn PDF document text
    • http://possumholler.us/images/roblox-hack-tool_GM431946152.pdfIn PDF document text
    • http://possumholler.us/images/coin-master-rare-cards-hack_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
stream_003_off00004be6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BE6 25236 bytes
SHA-256: 1f2edd137322bcb29ee4a83144bc0830371a3737f6089e87275a02dc0204bf97
font_01_sfnt_off00008580.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8580 17884 bytes
SHA-256: f64f8d8cd546afe107dcd88d9ce91258665e3d619825ef5ba403a2abc0c27184

Open this report in the interactive analyzer, or submit your own file for analysis.