Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba49ea550694dc0d…

MALICIOUS

PDF

34.6 KB Created: 2021-07-01 23:45:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 3866597e6726365a0858f0bb5eaa7e11 SHA-1: 87c131a0c310fd719e42f9d0f615f61bf94e4cee SHA-256: ba49ea550694dc0d77560f2fee9ae1cc7754c49aa5c9828bf6e34f5eb3142bcc
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

The PDF document contains numerous embedded URLs and a link farm, all pointing to websites offering game hacks and cheats. The document body explicitly mentions 'Roblox Field Of Battle Gold Hack 2021' and includes URLs that are likely intended to lead the user to download malicious files or visit phishing pages. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is part of a scam or malware distribution campaign.

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-field-of-battle-gold-hack-2021-game-hack PDF link annotation
    • https://vierabyragazze.com/upload/files/400-robux-for-free-gamekit_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/free-games-coin-master_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/penguins-on-roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/coin-master-guide-to-free-spins-and-rewards_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/free-coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/king-hack-esp-roblox_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/coin-master-hack-apk-download-2021_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/roblox-no-clip-cheat-engine_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/how-to-get-free-robux-hack-pastebin_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/script-for-have-gamepass-free-roblox-pastebin_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/how-to-hack-roblox-accounts-without-passwords_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/free-tiktok-followers-no-verification-or-survey_GM835599320.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/free-roblox-hack_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/coin-master-hack-using-lucky-patcher_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/how-to-get-minecraft-for-free-on-ipad_GM479516143.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/free-marshmellow-head-on-roblox_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/coin-master-free-spin-download_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/roblox-group-free-robux_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/hack-para-robux-gratis-2021_GM431946152.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_off00002dff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DFF 22572 bytes
SHA-256: 4d478427a024d1719351943053085e92c57c09e3fdacc7343ab052ed401d5e11
font_01_sfnt_off0000604a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x604A 19620 bytes
SHA-256: 727035c0fb065394aa18616ac586602bf8071e31a04d870d5876ebc295686ee9

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