Malicious PDF — malware analysis report

Static analysis result for SHA-256 28448b8df4b6427f…

MALICIOUS

PDF

34.3 KB Created: 2021-06-18 05:19:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 662cf2741831db11a155186fcac09fd1 SHA-1: cfa120d7e758aed3182e80c3a160e91cd33dd369 SHA-256: 28448b8df4b6427fa472932c7a7ffcd9cf3d5df830aad3d2f8eda45ac791dd4f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one to a known malicious redirector infrastructure, that promise game hacks and free currency. The document body and heuristics indicate a lure for users interested in such content, likely leading to a malicious download or further redirection. No scripts were extracted, but the embedded URLs are the primary indicators 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.co/app/431946152/gun-giver-script-lua-hack-roblox-game-hack In PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/coin-master-game-free-download-for-pc_GM406889139.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/rewards-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/minecraft-cracked-client_GM479516143.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/free-robux-com-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/how-to-hack-in-tower-of-hell-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/get-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/roblox-free-exploits_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/lazyblocks-com-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/coin-master-hack-spins-download_GM406889139.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/robux-miner_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/how-to-hack-roblox-acccounts-2021_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/coin-master-daily-free-spins-link-today-twitter_GM406889139.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/free-vip-server-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/roblox-free-blonde-hair_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/coin-master-free-spin-and-coins-links_GM406889139.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/free-robux-on-ipad_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_off00002e67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E67 22464 bytes
SHA-256: 21a3bab359949dd73b859bb873a81e4651944519b8d5164bc5b18d163c12f159
font_01_sfnt_off0000601a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x601A 19308 bytes
SHA-256: 68098e24631bfa437c6bff57d13a7c9d2a234e1e2a7f62a726d9aa23a16d4bfa

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