Malicious PDF — malware analysis report

Static analysis result for SHA-256 46ffe58538d198a0…

MALICIOUS

PDF

31.9 KB Created: 2021-07-19 04:41:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 9486df11e7ccbe76c7158afeefc3b45b SHA-1: 068438ea793fb21f60a00aba7983a039eeecbe13 SHA-256: 46ffe58538d198a0de752d21e0e9cc01c88aebfc6efbf6b042f434e79ff0d196
160 Risk Score

Malware Insights

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

This PDF document contains embedded links that redirect to a malicious website, likely to lure users into downloading further malware or engaging in scams. The document body and heuristics indicate a lure related to game hacks and generators, specifically mentioning 'Minecraft Name Tag Hacks' and a call to action to download. The ML classifier strongly flagged this PDF as malicious, and the presence of redirector links further supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9900

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/479516143/minecraft-name-tag-hacks-game-hack In PDF document text
    • https://www.acacss.com/images/coin-master-free-gifts_GM406889139.pdfIn PDF document text
    • https://www.acacss.com/images/free-tiktok-likes_GM835599320.pdfIn PDF document text
    • https://www.acacss.com/images/minecraft-free-play-no-download_GM479516143.pdfIn PDF document text
    • https://www.acacss.com/images/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
    • https://www.acacss.com/images/how-to-get-free-tiktok-fans-without-human-verification_GM835599320.pdfIn PDF document text
    • https://www.acacss.com/images/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • https://www.acacss.com/images/how-to-download-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
    • https://www.acacss.com/images/minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • https://www.acacss.com/images/free-followers-for-tiktok_GM835599320.pdfIn PDF document text
    • https://www.acacss.com/images/how-to-get-free-robux-without-verifying-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
font_00_sfnt_off0000291f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x291F 22332 bytes
SHA-256: f2e2c4820b4da526ae3a2d0d0e0afa5dbf00c4a14ed9b5ff62e4925c1d2b5cec
font_01_sfnt_off00005ac2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AC2 18288 bytes
SHA-256: eb7ed4260d6d64c3cd9f3242d6af3157cea31df7eff6e4be90ec8e6c005c47d1