Malicious PDF — malware analysis report

Static analysis result for SHA-256 71962078e1275479…

MALICIOUS

PDF

34.0 KB Created: 2021-06-20 03:32:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: fe2c02dc01572b640802e2a5ff932fcd SHA-1: 904f5401acb701fa78cbff029ed8c34e5015d900 SHA-256: 71962078e127547901a28dd8524b9be44ef8b9db0cac0b7af8576d505c2899da
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document contains multiple links to external websites, including a known malicious redirector, that promise free game hacks and cheats. The document body and heuristic firings indicate a lure to download potentially unwanted or malicious software. No scripts were extracted from this sample, but the embedded URLs are the primary indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/download-roblox-pc-hack-game-hack In PDF document text
    • http://kumotor.com.tw/upload/userfiles/files/minecraft-story-mode-free_GM479516143.pdfIn PDF document text
    • http://kumotor.com.tw/upload/userfiles/files/100-free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://kumotor.com.tw/upload/userfiles/files/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://kumotor.com.tw/upload/userfiles/files/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://kumotor.com.tw/upload/userfiles/files/tiktok-fame-free_GM835599320.pdfIn PDF document text
    • http://kumotor.com.tw/upload/userfiles/files/is-roblox-free-on-nintendo-switch_GM431946152.pdfIn PDF document text
    • http://kumotor.com.tw/upload/userfiles/files/free-spin-link-in-coin-master_GM406889139.pdfIn PDF document text
    • http://kumotor.com.tw/upload/userfiles/files/coin-master-hack-spins-2021_GM406889139.pdfIn PDF document text
    • http://kumotor.com.tw/upload/userfiles/files/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • http://kumotor.com.tw/upload/userfiles/files/free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://kumotor.com.tw/upload/userfiles/files/get-robux-com_GM431946152.pdfIn PDF document text
    • http://kumotor.com.tw/upload/userfiles/files/robux-gainer_GM431946152.pdfIn PDF document text
    • http://kumotor.com.tw/upload/userfiles/files/minecraft-server-hacks_GM479516143.pdfIn PDF document text
    • http://kumotor.com.tw/upload/userfiles/files/roblox-tokyo-ghoul-online-cheat_GM431946152.pdfIn PDF document text
    • http://kumotor.com.tw/upload/userfiles/files/free-robux-with-no-human-verification_GM431946152.pdfIn PDF document text
    • http://kumotor.com.tw/upload/userfiles/files/fly-script-roblox-hack_GM431946152.pdfIn PDF document text
    • http://kumotor.com.tw/upload/userfiles/files/roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://kumotor.com.tw/upload/userfiles/files/free-robux-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://kumotor.com.tw/upload/userfiles/files/get-free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://kumotor.com.tw/upload/userfiles/files/pasos-para-hackear-coins-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E18 22012 bytes
SHA-256: 4cb52d2c44476e3156e0d649a05d63404c860164fc73378a73da93fd738ed14e
font_01_sfnt_off00005ed0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5ED0 19316 bytes
SHA-256: 2211032fd42dc91b6753a7ec7a560fab00b466bb2bc5d74f168e139297909a4e

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