Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccb0fd0d9298c40a…

MALICIOUS

PDF

34.8 KB Created: 2021-07-03 23:42:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 96bca993d6c486556b25cdcc12b1ba84 SHA-1: 7d26c13f09f09f2578afd1c9ac779403690fde57 SHA-256: ccb0fd0d9298c40a8c40be77e475b7510aff478374f00254a6e1089473d4e481
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirector infrastructure, specifically promoting 'game hacks' and 'free generators'. The document body and heuristics indicate a lure to download potentially malicious files from these redirectors. No scripts were extracted, but the embedded URLs and the nature of the lure strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/download-hacked-games-com-coin-master-game-hack In PDF document text
    • https://planetzoe.hr/files/free-robux-no-verification-at-all_GM431946152.pdfIn PDF document text
    • https://planetzoe.hr/files/robux-free-c_GM431946152.pdfIn PDF document text
    • https://www.planetzoe.hr/files/free-roblox-girl-clothes_GM431946152.pdfIn PDF document text
    • https://www.planetzoe.hr/files/free-robux-hack-just-username_GM431946152.pdfIn PDF document text
    • https://planetzoe.hr/files/coin-master-hack-online-2021_GM406889139.pdfIn PDF document text
    • https://www.planetzoe.hr/files/hackear-prison-life-roblox-2021-pc_GM431946152.pdfIn PDF document text
    • https://planetzoe.hr/files/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • https://planetzoe.hr/files/coin-master-real-hack_GM406889139.pdfIn PDF document text
    • https://planetzoe.hr/files/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • https://planetzoe.hr/files/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
    • https://planetzoe.hr/files/easy-robux-today_GM431946152.pdfIn PDF document text
    • https://planetzoe.hr/files/cheat-in-roblox-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.planetzoe.hr/files/minecraft-hack-client-download_GM479516143.pdfIn PDF document text
    • https://planetzoe.hr/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.planetzoe.hr/files/games-that-give-you-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.planetzoe.hr/files/how-to-get-minecraft-for-free-on-laptop_GM479516143.pdfIn PDF document text
    • https://www.planetzoe.hr/files/link-for-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://planetzoe.hr/files/citizen-hacking-roblox_GM431946152.pdfIn PDF document text
    • https://planetzoe.hr/files/free-robux-hack-exe_GM431946152.pdfIn PDF document text
    • https://planetzoe.hr/files/free-spins-coin-master-twitter_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_off00002f58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F58 23232 bytes
SHA-256: 45923bba710a0ce096741c4df243cf668286e85a7ce617902bdea4f61816a7fa
font_01_sfnt_off0000639b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x639B 18844 bytes
SHA-256: d6bbba44fdf6698b8b7aa96d1af5e520d01dd7071d16206ec7b75659562237bd