Malicious PDF — malware analysis report

Static analysis result for SHA-256 b17a46bdda709673…

MALICIOUS

PDF

33.5 KB Created: 2021-06-30 04:11:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 076ab8de78a117fd699582acfb4d5bd9 SHA-1: 11f6f427b858420808b2f2cc6a9f1cc5139c23c4 SHA-256: b17a46bdda709673ec5a1072752415d9eccb3deb4e04118ffa3eed02c42e8164
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/free-robux-com-game-hack PDF link annotation
    • https://library.institutpendidikan.ac.id/repository/free-sailor-t-shirt-roblox_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/how-to-hack-roblox-on-mobile_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/earn-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/how-to-look-good-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/ads-for-free-robux_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/how-to-get-free-robux-with-ads_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/80-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/how-to-hack-dragon-ball-rage-in-roblox_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/how-to-change-your-username-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-unused-activated-roblox-card-codes_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/roblox-cheat-exploiter_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-robux-rbxplace_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/indidojoe-robux-hack_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/how-to-get-hacks-on-minecraft_GM479516143.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/roblox-gta-5-money-hack_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/bad-words-on-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/codde-for-free-roblox-hats_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/roblox-game-free-demo_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_off00002cd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CD8 22084 bytes
SHA-256: b98c4fbc4e4026ee832b62d864091bea10b09dfd93d7ec1ea92f8dc44c3a088c
font_01_sfnt_off00005de8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DE8 18976 bytes
SHA-256: 20782bd0acfe52469dc9f14a315b4aee1c9563688044d1d6d3a516ef71528a8c

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