Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0dcf1abb7da7d45…

MALICIOUS

PDF

34.1 KB Created: 2021-07-04 22:36:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: f2b3ee07518c83ac78d868cd45af4a81 SHA-1: 8536fbd65cf61d5c17e802721f6af2aefae5f869 SHA-256: d0dcf1abb7da7d458919b7f2575f6385e0984db551bafdd583c5665d3f95c5ce
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.tw/app/431946152/how-do-i-earn-robux-game-hack PDF link annotation
    • http://digilib.stimata.ac.id/repository/minecraft-alt-accounts-free_GM479516143.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/mobilehacks4u-free-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/coin-master-free-spins-generator-no-verification_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/roblox-no-download-hack_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/roblox-hack-robux-2021-apk_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/roblox-jailbreajk-new-hack_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-robux-reddit_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-spin-coin_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/minecraft-windows-10-edition-free_GM479516143.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-robux-with-points-with-commenting_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-roblox-girl-clothes_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/how-to-hack-someones-minecraft-account_GM479516143.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-robux-generator-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/minecraft-hacks-xbox_GM479516143.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-roblox-gfx_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/reddit-coin-master-hack_GM406889139.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
stream_002_off00002f27.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2F27 22316 bytes
SHA-256: bc0a847f6288aaf3fb4954c55c7be5137480c2c8e6c5dd0f9a21ea7b7c80653a
font_01_sfnt_off000060bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60BB 18884 bytes
SHA-256: 0a8d7a379d75a74d52be7bd4216aad0700edb3e310f87c33ee417f3335b78a59

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