Malicious PDF — malware analysis report

Static analysis result for SHA-256 220a0104fb9206ce…

MALICIOUS

PDF

44.6 KB Created: 2021-06-03 20:01:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 52c4c3c6fb92f39a0f080802361a81aa SHA-1: 69a6b4493237e5527502fdf7f2372f3721bb9bcc SHA-256: 220a0104fb9206ceaef57ab8005ad20d73a6530e90d55e5cfd5cedaf369b1956
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 0.9865

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.online/app/406889139/coin-master-fan-page-giveaway-game-hack PDF link annotation
    • http://www.rewaqousha.net/userfiles/files/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/pokemon-go-free-joystick-ios_GM1094591345.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/how-do-you-hack-for-2021000-coins-on-flip-master_GM406889139.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/coin-master-daily-free-coins-link_GM406889139.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/roblox-hacked-accounts-list_GM431946152.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/hacks-for-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/coin-master-hack-free-spins_GM406889139.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/free-spin-coin-master-hacktoman_GM406889139.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/spin-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/coin-master-hack-iosgods_GM406889139.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/free-games-coin-master_GM406889139.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/free-minecraft-texture-packs-java_GM479516143.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/free-minecraft-printables_GM479516143.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/roblox-comroblox_GM431946152.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/wurst-commands_GM479516143.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/coin-master-free-spins-link-today-blogspot_GM406889139.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/coin-master-links-that-don-t-expire_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_004_off0000528c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x528C 24360 bytes
SHA-256: e979cc28fc396fed3c9fe3ab454ade9d5e0b6774ac277a435913ca0768fd75b4
font_01_sfnt_off00008a85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A85 18608 bytes
SHA-256: 854f4b4211f415c7f5aa47802dca21b81c8c3685ea946d21c48c5daf2079a60e

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