Malicious PDF — malware analysis report

Static analysis result for SHA-256 43fbe56e0937fe74…

MALICIOUS

PDF

35.4 KB Created: 2021-07-06 09:43:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 32fab86c559ebf84da8a7da2675c5d58 SHA-1: 0aabae180c33340a4e5d59b96d68d3e7ab6bf4c5 SHA-256: 43fbe56e0937fe74a1c7ef9cec36ba80923cbc52b7226ef3c48497000aa6ef1e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to a known malicious infrastructure, specifically advertising 'game hacks' and 'free generators'. The document body and heuristics indicate a lure designed to entice users to click these links, likely leading to further malware downloads or phishing pages. No scripts were extracted, but the presence of malicious redirector links is a strong indicator of malicious intent.

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/how-to-hack-coin-master-spin-game-hack In PDF document text
    • http://gts.edu.gh/library/repository/doctor-louie-roblox_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/why-cant-i-use-cheat-engine-on-roblox_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-spins-coin-master-site-wwwquoracom_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/hacks-for-prisone-life-roblox_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/roblox-free-executor_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-hack-xyz-download-free_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/how-to-get-free-robux-on-computer_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/how-do-you-earn-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/hack-roblox-players_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/twitter-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/roblox-ipad-cheat-codes_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-free-spins-and-coins-for-iphone_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/minecraft-bedrock-free-download_GM479516143.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/roblox-free-hair-codes_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/login-roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/how-you-get-robux_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/get-free-robux-now_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_off0000318c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x318C 23828 bytes
SHA-256: c75fbd6e5d8f55e2faac2e9dbf2d4c79c062748798ea71037412faae640f4319
font_01_sfnt_off0000676c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x676C 18344 bytes
SHA-256: d731dcfdb78098c65969a4271b6873fd6091dee75614696ef1f1c6e4783d348a

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