Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecac388b2db7217a…

MALICIOUS

PDF

33.2 KB Created: 2021-06-28 01:16:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 71fe868d0a7f90af6a81d8ef292e7f40 SHA-1: 2e9f15824f53e5bb57a6bc5329c3dc251cc8c46a SHA-256: ecac388b2db7217aa9ae7e31f3dac5dc153699cce5381d1a0e68df56acd6426c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game hacks and codes to entice users to click on links. The primary link directs to a known malicious redirector infrastructure, which in turn serves other PDF files hosted on a suspicious domain. The document body contains numerous URLs pointing to similar game-related cheat/hack PDFs, indicating a campaign to distribute potentially malicious content or lead users to further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

Heuristics 4

  • 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.
  • 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 http://netcdn.co/app/431946152/free-roblox-game-creation-code-game-hack In PDF document text
    • http://kmh.ddnsthailand.com/ckfinder/userfiles/files/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://kmh.ddnsthailand.com/ckfinder/userfiles/files/link-coin-master_GM406889139.pdfIn PDF document text
    • http://kmh.ddnsthailand.com/ckfinder/userfiles/files/free-robux-stream_GM431946152.pdfIn PDF document text
    • http://kmh.ddnsthailand.com/ckfinder/userfiles/files/minecraft-auto-miner-hack_GM479516143.pdfIn PDF document text
    • http://kmh.ddnsthailand.com/ckfinder/userfiles/files/coin-master-hack-tool-2021_GM406889139.pdfIn PDF document text
    • http://kmh.ddnsthailand.com/ckfinder/userfiles/files/pokemon-go-for-free-download_GM1094591345.pdfIn PDF document text
    • http://kmh.ddnsthailand.com/ckfinder/userfiles/files/free-coins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://kmh.ddnsthailand.com/ckfinder/userfiles/files/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • http://kmh.ddnsthailand.com/ckfinder/userfiles/files/how-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://kmh.ddnsthailand.com/ckfinder/userfiles/files/free-roblox-money_GM431946152.pdfIn PDF document text
    • http://kmh.ddnsthailand.com/ckfinder/userfiles/files/roblox-hacks-and-cheats_GM431946152.pdfIn PDF document text
    • http://kmh.ddnsthailand.com/ckfinder/userfiles/files/rc7-for-roblox-free_GM431946152.pdfIn PDF document text
    • http://kmh.ddnsthailand.com/ckfinder/userfiles/files/roblox-project-pokemon-hack-2021_GM431946152.pdfIn PDF document text
    • http://kmh.ddnsthailand.com/ckfinder/userfiles/files/free-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://kmh.ddnsthailand.com/ckfinder/userfiles/files/free-bedrock-minecraft_GM479516143.pdfIn PDF document text
    • http://kmh.ddnsthailand.com/ckfinder/userfiles/files/coin-master-332-apk-free-download_GM406889139.pdfIn PDF document text
    • http://kmh.ddnsthailand.com/ckfinder/userfiles/files/minecraft-classic-free_GM479516143.pdfIn PDF document text
    • http://kmh.ddnsthailand.com/ckfinder/userfiles/files/coin-master-support_GM406889139.pdfIn PDF document text
    • http://kmh.ddnsthailand.com/ckfinder/userfiles/files/roblox-polo-ralph-lauren-free_GM431946152.pdfIn PDF document text
    • http://kmh.ddnsthailand.com/ckfinder/userfiles/files/how-to-get-minecraft-on-chromebook-for-free_GM479516143.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
font_00_sfnt_off00002b31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B31 22072 bytes
SHA-256: 0d371c79318d64abfd2a2effd34866cb6dd50790290a3a8900faa96131c03f6b
font_01_sfnt_off00005c23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C23 19308 bytes
SHA-256: 80f8a96a79a3f73a2e90e3d4e33b4e41293f28c3423e31567a8d867c1b386663

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