Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bed226d35e28e70…

MALICIOUS

PDF

44.9 KB Created: 2021-05-13 00:04:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: d3eef382edc4d8205da70e06eb1822bb SHA-1: 0925dd31a8eb955356fd52fc30ff2e95741169a6 SHA-256: 3bed226d35e28e70683d6089f16824a67ff79a6794427f5f9513fe54f0befe4d
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/406889139/coin-master-free-coins-game-hack PDF link annotation
    • http://bishopdiego.org/images/how-to-hack-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://bishopdiego.org/images/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://bishopdiego.org/images/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://bishopdiego.org/images/free-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://bishopdiego.org/images/minecraft-java-account-free_GM479516143.pdfIn PDF document text
    • http://bishopdiego.org/images/robux-free-online_GM431946152.pdfIn PDF document text
    • http://bishopdiego.org/images/coin-master-free-spins-hack-without-human-verification_GM406889139.pdfIn PDF document text
    • http://bishopdiego.org/images/how-to-get-free-robux-for-kids_GM431946152.pdfIn PDF document text
    • http://bishopdiego.org/images/no-verification-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://bishopdiego.org/images/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://bishopdiego.org/images/minecraft-esp_GM479516143.pdfIn PDF document text
    • http://bishopdiego.org/images/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • http://bishopdiego.org/images/how-to-get-free-robux-in-2021_GM431946152.pdfIn PDF document text
    • http://bishopdiego.org/images/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
    • http://bishopdiego.org/images/minecraft-hacks-xbox_GM479516143.pdfIn PDF document text
    • http://bishopdiego.org/images/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://bishopdiego.org/images/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://bishopdiego.org/images/coin-master-rewards_GM406889139.pdfIn PDF document text
    • http://bishopdiego.org/images/minecraft-pe-016-0-apk-download-free_GM479516143.pdfIn PDF document text
    • http://bishopdiego.org/images/free-robux-now_GM431946152.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
font_00_sfnt_off00004923.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4923 24880 bytes
SHA-256: c31d13decd402295eadc6ae8c0f0aaf873ae32d58bb4621936cc927ca8812f57
font_01_sfnt_off000080a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80A2 4140 bytes
SHA-256: fadd6adc619b5dae06481310fe8c64f9c468bd2b49dcab5d1125d2c06f73829c
font_02_sfnt_off00008e84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E84 17712 bytes
SHA-256: 0afd6f2792edb83b7f2a0201a1e0a5eb12ca81ad868fb3e42742340ee6e5fb0e

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