Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d6bbed30a837633…

MALICIOUS

PDF

44.9 KB Created: 2021-05-17 21:33:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 494327dae305d82c7fbb360332ae85a3 SHA-1: 1acaadac13b61cdcea9dfd3fa28dc0a23ae83f8d SHA-256: 2d6bbed30a837633a43f383f5d5caebf1aa770f6b805f6e725a38f96b6192a4b
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 0.9632

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 https://netcdn.xyz/app/479516143/minecraft-clipart-free-game-hack PDF link annotation
    • http://boliviagasenergia.com/images/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://boliviagasenergia.com/images/coin-master-free-spins-link-haktuts_GM406889139.pdfIn PDF document text
    • http://boliviagasenergia.com/images/coin-master-free-spin-link-daily_GM406889139.pdfIn PDF document text
    • http://boliviagasenergia.com/images/coin-master-free-mighty-lion-card_GM406889139.pdfIn PDF document text
    • http://boliviagasenergia.com/images/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • http://boliviagasenergia.com/images/minecraft-pe-mod-menu_GM479516143.pdfIn PDF document text
    • http://boliviagasenergia.com/images/minecraft-windows-10-free-trial_GM479516143.pdfIn PDF document text
    • http://boliviagasenergia.com/images/free-robux-gen_GM431946152.pdfIn PDF document text
    • http://boliviagasenergia.com/images/microsoft-rewards-roblox_GM431946152.pdfIn PDF document text
    • http://boliviagasenergia.com/images/what-is-wurst_GM479516143.pdfIn PDF document text
    • http://boliviagasenergia.com/images/free-robux-no-download_GM431946152.pdfIn PDF document text
    • http://boliviagasenergia.com/images/coin-master-hack-online-no-human-verification_GM406889139.pdfIn PDF document text
    • http://boliviagasenergia.com/images/free-spins-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://boliviagasenergia.com/images/free-400-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://boliviagasenergia.com/images/buxblast-com-robux_GM431946152.pdfIn PDF document text
    • http://boliviagasenergia.com/images/coin-master-free-stuff-links_GM406889139.pdfIn PDF document text
    • http://boliviagasenergia.com/images/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
    • http://boliviagasenergia.com/images/cheats-coin-master-free-spins-and-news_GM406889139.pdfIn PDF document text
    • http://boliviagasenergia.com/images/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://boliviagasenergia.com/images/free-spin-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b79.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B79 24964 bytes
SHA-256: 63450f7f176e001653527fe375406ad8a1c9118d37acb77d0c40b967f8dbdfc9
font_01_sfnt_off000084d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84D3 2856 bytes
SHA-256: 8c5d9bcb386d88c7f99323d8d482e46ea21dea038a5b842744dd5d39b26b2c44
font_02_sfnt_off00008eaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EAA 17816 bytes
SHA-256: 91cd75b72efc4400f550dd169e429811ff3a09c689ab9966efef0c18f18efa2f

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