Malicious PDF — malware analysis report

Static analysis result for SHA-256 6154cf7710d7dce8…

MALICIOUS

PDF

35.2 KB Created: 2021-07-06 11:53:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 3ae8321cbf9a608e6e7279a0a039efb2 SHA-1: 368be63f7d0c9f1f65644810616644fee22d3395 SHA-256: 6154cf7710d7dce8054746655ac9dbc2dd0fff847fb5c4db241cd3e323f7d530
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a malicious redirector link, specifically advertising a 'free generator / game hack'. The document body and extracted URLs reinforce this, pointing to a lure for free spins or game hacks. This suggests the primary goal is to redirect users to potentially malicious websites, likely for further exploitation or credential harvesting.

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/daily-coin-master-free-spins-game-hack In PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/how-to-get-free-roblox-codes-for-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/real-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/how-to-play-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/how-to-get-free-robux-on-phone-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/robux-tool-free-download_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/free-minecraft-codes_GM479516143.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/minecraft-pe-free_GM479516143.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/ways-to-hack-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/how-to-not-get-your-roblox-account-hacked_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/coin-master-free-spins-glitch_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/free-robux-no-human-verification-and-no-offers_GM431946152.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/http-roblox-hack-mobilegenerator-net_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/hack-coin-master-free_GM406889139.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/roblox-cheat-engine-scripts-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/free-robux-websites-no-password_GM431946152.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/is-roblox-free-modelling-bad_GM431946152.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/nascar-17-roblox-cheats_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/how-to-scam-on-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/roblox-sharkbite-hack_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_off0000321f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x321F 23052 bytes
SHA-256: fa731299d50a43cf1f8223fc82ad759f5a4e132931a01853c57c06173942fd46
font_01_sfnt_off000065e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65E6 18596 bytes
SHA-256: f67cf45397c25494501e3e9871b79c38ca25439d2209cefdb99d193c8fd940d5

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