Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b67600dd0016630…

MALICIOUS

PDF

34.9 KB Created: 2021-07-05 06:12:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: c0094d239618570c81dfe46727557383 SHA-1: d4f2d62cc61151c760f5cbba8ea26862a6393e54 SHA-256: 7b67600dd0016630e4c28bb679aed74506870df1bbb31fcbc6a0a075915b33e9
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for 'free Robux' and game hacks, directing users to a suspicious URL. The ML classifier strongly indicates maliciousness. The presence of embedded URLs and the 'game hack redirect lure' heuristic suggest the primary goal is to redirect users to a potentially malicious site 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 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.tw/app/431946152/free-robux-viseo-not-clickbait-game-hack PDF link annotation
    • https://digilib.stimlog.ac.id/repository/coin-master-blogspot-links_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-roblox-shirt-file_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-get-free-robux-with-inspect-element-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-robux-ultimte-gamer-365_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/coin-master-real-free-spins_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/op-rewards-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-play-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-robux-card-codes_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-bloxburg-beta-free_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/giyfcom-roblox-hack_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-roblox-promo-codes-no-human-verifycation_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/hack-para-counter-blox-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/how-to-get-free-gear-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/coin-master-100-spin-hack_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/da-hood-hack-tuto-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/generator-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-roblox-game-card_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-robux-created-by-robuxian_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/hack-to-get-money-on-roblox_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_off00003026.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3026 22536 bytes
SHA-256: 5b4f09a0748135c2634ecc25d83312157dee202058d35773c1bb9c49ee5a4962
font_01_sfnt_off000062a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62A1 19316 bytes
SHA-256: 1f276852c640b371a6d9abc14e3c3ad358b81834f7982a3b994407f1996f3d3e

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