Malicious PDF — malware analysis report

Static analysis result for SHA-256 f14624b46c78127a…

MALICIOUS

PDF

35.7 KB Created: 2021-06-19 16:31:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: a60d99c90a42d3c284015bbf2caf87fa SHA-1: c3de6036807db0f854391854b18d656da6a51bd4 SHA-256: f14624b46c78127a33f8d7ed5f87766d0680e3218afb7eb4e4512b613c08742a
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links to external websites, many of which are structured as SEO-optimized links for game-related cheats and currency. The ML classifier strongly indicated maliciousness, and the presence of a link farm suggests a deceptive intent to drive traffic to potentially harmful or scam-related content. No scripts were extracted, but the overall structure and link distribution are indicative of a phishing or scam lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/roblox-skin-pro-free-game-hack PDF link annotation
    • http://force-seniorklub.dk/images/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://force-seniorklub.dk/images/daily-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://force-seniorklub.dk/images/roblox-arsenal-hacks-download_GM431946152.pdfIn PDF document text
    • http://force-seniorklub.dk/images/coin-master-game-hunters-club_GM406889139.pdfIn PDF document text
    • http://force-seniorklub.dk/images/free-robux-no-verification-no-survey-2021_GM431946152.pdfIn PDF document text
    • http://force-seniorklub.dk/images/how-to-create-group-in-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://force-seniorklub.dk/images/how-to-get-free-spins-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://force-seniorklub.dk/images/coin-master-daily-bonus-hack_GM406889139.pdfIn PDF document text
    • http://force-seniorklub.dk/images/free-robux-free-apps_GM431946152.pdfIn PDF document text
    • http://force-seniorklub.dk/images/how-to-get-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://force-seniorklub.dk/images/roblox-top_GM431946152.pdfIn PDF document text
    • http://force-seniorklub.dk/images/roblox-hack-version-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://force-seniorklub.dk/images/earn-free-robux-by-downloading-apps-and-completing-offers_GM431946152.pdfIn PDF document text
    • http://force-seniorklub.dk/images/free-err-face-roblox_GM431946152.pdfIn PDF document text
    • http://force-seniorklub.dk/images/coin-master-hack-mod-apk-2021-download_GM406889139.pdfIn PDF document text
    • http://force-seniorklub.dk/images/free-robux-ad_GM431946152.pdfIn PDF document text
    • http://force-seniorklub.dk/images/free-robux-with-fake-name_GM431946152.pdfIn PDF document text
    • http://force-seniorklub.dk/images/free-premium-roblox_GM431946152.pdfIn PDF document text
    • http://force-seniorklub.dk/images/easy-hacks-on-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://force-seniorklub.dk/images/free-coins-and-spins_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_off00003383.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3383 22996 bytes
SHA-256: fc06a733eba904c8be824414e4936432fc8f5337736238381568587045f7893d
font_01_sfnt_off000066a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66A3 19092 bytes
SHA-256: b597b8a0cbd554df3f1b988f8ca87d159a0d82ed8d1cd9cb9cd73747470ad2ad

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