Malicious PDF — malware analysis report

Static analysis result for SHA-256 6869ca25990388ac…

MALICIOUS

PDF

31.7 KB Created: 2021-07-21 04:52:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 555bc380715825d0a420d6ee62a27dfc SHA-1: bd6a6ad441f45aa380baea2540cd4f569235e1d7 SHA-256: 6869ca25990388ac21ed15e35010433685ece177b40cc6e63131ffb0b49483d2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors, masquerading as 'free generators' or 'game hacks' for popular online games and services. The primary lure directs users to http://netcdn.tw/app/835599320/get-free-likes-on-tiktok-game-hack, which is flagged as a malicious redirector. The document body also contains numerous other links to domains associated with similar lures, suggesting a campaign to drive traffic to potentially malicious sites or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9900

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.tw/app/835599320/get-free-likes-on-tiktok-game-hack In PDF document text
    • http://interokna-kuban.ru/images/how-to-get-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
    • http://interokna-kuban.ru/images/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • http://interokna-kuban.ru/images/roblox-fly-hack_GM431946152.pdfIn PDF document text
    • http://interokna-kuban.ru/images/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • http://interokna-kuban.ru/images/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://interokna-kuban.ru/images/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • http://interokna-kuban.ru/images/minecraft-realms-free_GM479516143.pdfIn PDF document text
    • http://interokna-kuban.ru/images/coin-master-free-link_GM406889139.pdfIn PDF document text
    • http://interokna-kuban.ru/images/roblox-apocalypse-rising-hack_GM431946152.pdfIn PDF document text
    • http://interokna-kuban.ru/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://www.bbc.com/news/world-asia-china-20212021In 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_002_off0000285c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x285C 23136 bytes
SHA-256: f6c9066755e3c8f680d0bb35e8a0fdcf1c5c14b5b24017b0128d6813b65fc979
font_01_sfnt_off00005c6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C6D 17456 bytes
SHA-256: 782ce757928ab8849be8d7d6232199a595fd3f8ee03de5cb15c7b9ee803e6cfd