Malicious PDF — malware analysis report

Static analysis result for SHA-256 0477091dbb1dc121…

MALICIOUS

PDF

34.0 KB Created: 2021-07-08 10:08:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 2cb81b5fe989a4a66451f870180ab884 SHA-1: d3dc8f9ee121d0ef246ddfe362e4e43358ac8bfd SHA-256: 0477091dbb1dc121dce5d6f8a9ef784bdb808d4daf3bb6f240aaab65a9647b43
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and a prominent lure related to hacking game accounts, specifically Roblox and Coin Master. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' indicates the document's intent is to redirect users to external sites, likely for phishing or scamming purposes. While no scripts were explicitly extracted, the nature of the lures and embedded URLs strongly suggests a social engineering attack, likely initiated via spearphishing.

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-to-hack-roblox-accounts-game-hack PDF link annotation
    • https://digilib.stimlog.ac.id/repository/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/robux-pin-free-no-verification_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/money-woodcuting-simulator-hack-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-spins-link-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/coinmaster-free-spins-link_GM406889139.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/hack-coin-master-game-download_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-roblox-com_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-tiktok-likes-no-human-verification-or-download_GM835599320.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/robux-free-account_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-hide-and-seek-free-online-game-for-kids_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/coin-master-free-400-spin-link_GM406889139.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/coin-master-hack-tool-download_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/dominus-roblox-free_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-free-robux-no-survey-no-verification_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/get-free-robux-no-survey-no-download_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-robux-hack-2021-working_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-robux-generator-2021-real_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/earn-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00002dd7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2DD7 22372 bytes
SHA-256: 03138716cc78461952e443316762197bfc62194a87050e0b4a19ffd532817da3
font_01_sfnt_off00005fa5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FA5 19064 bytes
SHA-256: 8c571bf80081aaa5c2be303b8c9fe18b31c5334a74c17f7b55d65649f5ee093a

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