Malicious PDF — malware analysis report

Static analysis result for SHA-256 f04256873f3f8cac…

MALICIOUS

PDF

42.1 KB Created: 2021-05-11 18:00:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 090de6a522fa7bcb9acd081cf1ecf056 SHA-1: 71d2d7e9263ac9f99834dd508ec13205d1490cc3 SHA-256: f04256873f3f8cac841d7be2fb58d616c756223db4daa1378fbd874f14037915
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links designed to lure users into clicking on what appear to be game hack generators and free currency sites. The primary link, https://netcdn.xyz/app/406889139/free-spins-from-coin-master-game-hack, is flagged as a malicious redirector. The document body and heuristics indicate a mass link farm strategy, likely to drive traffic to malicious or scam websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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
  • 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/free-spins-from-coin-master-game-hack In PDF document text
    • http://peche-madagascar.com/images/free-roblox-toy-codes-2021_GM431946152.pdfIn PDF document text
    • http://peche-madagascar.com/images/hack-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://peche-madagascar.com/images/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • http://peche-madagascar.com/images/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://peche-madagascar.com/images/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://peche-madagascar.com/images/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://peche-madagascar.com/images/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • http://peche-madagascar.com/images/how-do-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://peche-madagascar.com/images/roblox-free-clothes-hack_GM431946152.pdfIn PDF document text
    • http://peche-madagascar.com/images/free-robux-scam_GM431946152.pdfIn PDF document text
    • http://peche-madagascar.com/images/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • http://peche-madagascar.com/images/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://peche-madagascar.com/images/mcpe-master-coins-hack-download_GM406889139.pdfIn PDF document text
    • http://peche-madagascar.com/images/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • http://peche-madagascar.com/images/free-old-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://peche-madagascar.com/images/get-free-coin-master_GM406889139.pdfIn PDF document text
    • http://peche-madagascar.com/images/minecraft-tiktok-hacks_GM479516143.pdfIn PDF document text
    • http://peche-madagascar.com/images/how-to-get-free-skins-in-minecraft_GM479516143.pdfIn PDF document text
    • http://peche-madagascar.com/images/coin-master-free-coins-link-facebook_GM406889139.pdfIn PDF document text
    • http://peche-madagascar.com/images/coin-master-heaven-free-daily-spins_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_off0000495e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x495E 24744 bytes
SHA-256: b2ffb26d11cc4b20c9c8affeef244debdf186e738b856cb32e84f21e3dbef2cf
font_01_sfnt_off0000828e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x828E 18148 bytes
SHA-256: a8179ab01d9f651dd6fb5ce3364ead5561884d8b40fe8a62eaf26fde05d0c646

Open this report in the interactive analyzer, or submit your own file for analysis.