Malicious PDF — malware analysis report

Static analysis result for SHA-256 e031fe2c19473320…

MALICIOUS

PDF

51.9 KB Created: 2021-06-04 00:16:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 1bfe2d12287844150b17f08143a9fc46 SHA-1: 7b7d508db75900aaa5c1b096ca6bebbc52768a16 SHA-256: e031fe2c1947332081eac5b5144b942dd44c3094cd86da42b62bb2e693815e91
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of 'game hacks' and 'free accounts' to entice users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, which in turn likely leads to further malicious content or downloads. The document's structure and embedded links strongly suggest a phishing or scamming attempt designed to compromise users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9862

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.online/app/431946152/roblox-april-fools-hack-game-hack In PDF document text
    • http://library.acehresearch.org/repository/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://library.acehresearch.org/repository/roblox-inappropriate-games_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/adopt-me-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/hack-coin-master-without-root_GM406889139.pdfIn PDF document text
    • http://library.acehresearch.org/repository/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://library.acehresearch.org/repository/static-moonactive-net-free-spins_GM406889139.pdfIn PDF document text
    • http://library.acehresearch.org/repository/coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://library.acehresearch.org/repository/free-800-robux_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/haktuts-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://library.acehresearch.org/repository/how-to-get-100-robux-for-free_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/do-robux-generators-work_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/100-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.acehresearch.org/repository/coin-master-hack-apk-july-29_GM406889139.pdfIn PDF document text
    • http://library.acehresearch.org/repository/coin-master-heaven-free-spins_GM406889139.pdfIn PDF document text
    • http://library.acehresearch.org/repository/www-free-robux_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/games-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/minecraft-win-10-free_GM479516143.pdfIn PDF document text
    • http://library.acehresearch.org/repository/free-robux-glitch_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_off000054f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54F4 38128 bytes
SHA-256: d617541c2169e809596edb0f87affbf62a420d6bc5cd05f945a05eb34234b070
font_01_sfnt_off0000a7f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA7F0 18640 bytes
SHA-256: 410f22dfa3a1d00d561499a0339a6a41be2e954e3f9c73b2d892c6afca972cb0

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