Malicious PDF — malware analysis report

Static analysis result for SHA-256 6acb76e4f5c75cf3…

MALICIOUS

PDF

42.6 KB Created: 2021-05-16 13:06:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 3f03223c63739db57f3e68ec559576cb SHA-1: cce0de7d038c190c35f5e17a3157e0beee7c81ff SHA-256: 6acb76e4f5c75cf37878268adfe6592b5c8e046abe8885ef2c62efaf1d3c4bc6
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is designed as a lure, presenting itself as a way to download game hacks or cheats. It contains numerous links, many pointing to a link farm, which likely serve to drive traffic to malicious or scam websites. The ML classifier strongly indicated maliciousness, and the presence of multiple external links supports a phishing or scamming attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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-hack-client-download-game-hack PDF link annotation
    • http://www.homesweethome.pl/images/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/coin-master-spins-hack-iphone_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/free-role-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/coin-master-free-spins-generator_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/coin-master-free-download-app_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/free-robux-redeem-codes-2021_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/free-minecraft-windows-10-account_GM479516143.pdfIn PDF document text
    • http://www.homesweethome.pl/images/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/haktuts-2021-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/easy-robux-today_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/coin-master-root-hack_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/free-robux-just-click_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/wurst-client_GM479516143.pdfIn PDF document text
    • http://www.homesweethome.pl/images/gamehunters-coin-master_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/free-daily-spins-and-coins-for-coin-master_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_003_off00004ac6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AC6 24968 bytes
SHA-256: f284bee78006501d1fc17ca7799e83c8b0b3d961270682eb281922383c3fb16f
font_01_sfnt_off000083a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83A0 18460 bytes
SHA-256: f0322949221cc4e2c5002b867d751862f4cd6735e4a5ba01a0e5101b475bc55e

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