Malicious PDF — malware analysis report

Static analysis result for SHA-256 d68cf1f97c6fd535…

MALICIOUS

PDF

43.8 KB Created: 2021-05-14 14:04:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: ebba5c19e53c9e2e01b0c27a7ddab719 SHA-1: 2eff0cc2d1505056c99abd68ea928d12aab97d30 SHA-256: d68cf1f97c6fd53591c9272ec6a2a9ce3320978d626f3065178766780a1e8b29
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 link farms. The document body and embedded links suggest a lure for "free Robux" or game-related cheats, indicating a phishing or scam attempt. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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 https://netcdn.xyz/app/431946152/free-robux-generator-2021-no-human-verification-game-hack PDF link annotation
    • http://vipservice-bg.com/images/coin-master-70-spin-link_GM406889139.pdfIn PDF document text
    • http://vipservice-bg.com/images/25-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://vipservice-bg.com/images/coin-master-free-spin-daily-bonus_GM406889139.pdfIn PDF document text
    • http://vipservice-bg.com/images/free-minecraft-account-and-password-2021_GM479516143.pdfIn PDF document text
    • http://vipservice-bg.com/images/coin-master-free-spins-only_GM406889139.pdfIn PDF document text
    • http://vipservice-bg.com/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://vipservice-bg.com/images/roblox-apk-hack_GM431946152.pdfIn PDF document text
    • http://vipservice-bg.com/images/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://vipservice-bg.com/images/roblox-hack-game_GM431946152.pdfIn PDF document text
    • http://vipservice-bg.com/images/free-robux-gift-card-generator_GM431946152.pdfIn PDF document text
    • http://vipservice-bg.com/images/roblox-arsenal-hack_GM431946152.pdfIn PDF document text
    • http://vipservice-bg.com/images/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://vipservice-bg.com/images/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • http://vipservice-bg.com/images/how-to-get-free-spins-on-coin-master-without-waiting_GM406889139.pdfIn PDF document text
    • http://vipservice-bg.com/images/roblox-admin-hack_GM431946152.pdfIn PDF document text
    • http://vipservice-bg.com/images/ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://vipservice-bg.com/images/roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://vipservice-bg.com/images/games-on-roblox-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://vipservice-bg.com/images/free-robux-generator-for-kids_GM431946152.pdfIn PDF document text
    • http://vipservice-bg.com/images/how-to-get-free-spins-and-coins-on-coin-master_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_off00004b0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B0B 25900 bytes
SHA-256: 7470d61e58446c9cba443b8b2c843d4b128aeb330f7261160bc092abb54ff116
font_01_sfnt_off000085f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85F1 19260 bytes
SHA-256: c7b90a5cfba5c375f14137d6940681acb1ecffd006539937a4c5badd529f0ccc

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