Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f579ca85db97ffc…

MALICIOUS

PDF

37.6 KB Created: 2021-07-03 22:17:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 6b4e66a7967414216b96d6f66bddb34f SHA-1: b7db11637d5130319634d3af4197d16a7f6187c0 SHA-256: 2f579ca85db97ffc755c2ae2495367ccc8fb148ff2d911cfecf7298a9a320588
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to websites offering 'free generators' or 'hacks' for popular games. These links are identified as malicious redirectors, indicating a phishing or scam attempt. The document's content and heuristics strongly suggest it is designed to lure users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9886

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/406889139/coin-master-free-spins-2021-hack-game-hack In PDF document text
    • https://mbbs.hr/files/coin-master-free-spins-11-01-2021_GM406889139.pdfIn PDF document text
    • https://mbbs.hr/files/coin-master-15-free-spin-link-today_GM406889139.pdfIn PDF document text
    • http://mbbs.hr/files/wahoogaming-co-free-robux_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/coin-master-game-hunter_GM406889139.pdfIn PDF document text
    • https://mbbs.hr/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/roblox-hack-download-computer_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/hack-roblox-autokill_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/play-for-free-robux_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/roblox-free-robux-code-generator_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/coin-master-daily-gift-free-spins-and-coins-link-today_GM406889139.pdfIn PDF document text
    • http://mbbs.hr/files/does-coin-master-hack-work_GM406889139.pdfIn PDF document text
    • https://mbbs.hr/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://mbbs.hr/files/coin-master-game-hack-app_GM406889139.pdfIn PDF document text
    • http://mbbs.hr/files/roblox-hacks-2021-free-robx_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/free-roblox-injector-for-cb_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/cheats-for-coin-master_GM406889139.pdfIn PDF document text
    • http://mbbs.hr/files/how-to-instantly-get-free-robux-in-roblox-2021-oprewards_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/coin-master-free-spins-a2z-help_GM406889139.pdfIn PDF document text
    • http://mbbs.hr/files/coin-master-apk_GM406889139.pdfIn PDF document text
    • https://mbbs.hr/files/hack-any-roblox-game_GM431946152.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000031a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31A3 22840 bytes
SHA-256: 7826b3d1e14baa7f20653113ac0c1b4b104c4d9be8ba7109f078b127219ddd17
font_01_sfnt_off000064c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64C6 2896 bytes
SHA-256: c1a618813a64314343402b2ec738fc11c4c912460a4c7ae3029924d2f9a229cd
font_02_sfnt_off00006eab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EAB 18748 bytes
SHA-256: 92aaead82d55c20f13300fdcc9721abaffa6ca8ca490d535bbad7112df5e0c31

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