Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc28d6758eb3f63b…

MALICIOUS

PDF

33.8 KB Created: 2021-07-05 13:35:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 7dada1c066ce3a145d5d034f11b5e24d SHA-1: dfbf3a133d5ff02b0ae336952da7d28f1046e566 SHA-256: cc28d6758eb3f63b69b8d6e23fea19a41bdcd875c0c4a6a49df27b481173ccf4
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to game hack generators and free in-game currency sites, many of which are hosted on known malicious redirector infrastructure. The document body and heuristics indicate a lure for game cheats, likely leading users to download further malicious content or visit phishing sites. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/coin-master-hack-pro-gamers-game-hack In PDF document text
    • https://mbbs.hr/files/free-minecraft-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • https://mbbs.hr/files/coin-master-free-spins-glitch_GM406889139.pdfIn PDF document text
    • http://mbbs.hr/files/free-spins-coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://mbbs.hr/files/how-to-get-free-skins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://mbbs.hr/files/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/coin-master-hack-apk-download-for-android_GM406889139.pdfIn PDF document text
    • https://mbbs.hr/files/get-free-dominus-roblox_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/como-tener-los-hacks-de-xonnkek-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/roblox-free-play-no-download_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/how-to-get-free-food-on-coin-master_GM406889139.pdfIn PDF document text
    • https://mbbs.hr/files/minecraft-windows-10-hacked-client_GM479516143.pdfIn PDF document text
    • https://mbbs.hr/files/minecraft-hacks-18-9_GM479516143.pdfIn PDF document text
    • https://mbbs.hr/files/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/coin-master-spin-link-free-download_GM406889139.pdfIn PDF document text
    • https://mbbs.hr/files/free-spins-coin-master-links-twitter_GM406889139.pdfIn PDF document text
    • https://mbbs.hr/files/coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • http://mbbs.hr/files/coin-master-attack-hack-apk_GM406889139.pdfIn PDF document text
    • http://mbbs.hr/files/free-spins-and-coins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://mbbs.hr/files/coin-master-hacks-no-verification_GM406889139.pdfIn PDF document text
    • http://mbbs.hr/files/coin-master-hack-mod-apk-free-download_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
font_00_sfnt_off00002e12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E12 22820 bytes
SHA-256: 223b7d479d783c3381757a584fb268bf9b6633ceb6c3dab0d8f5b88dcddf3cee
font_01_sfnt_off00006125.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6125 18416 bytes
SHA-256: 42eb204123647df6f85ca188dd99f1d84b9bafa3d0fb5c7709fcc50fb0944608

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