Malicious PDF — malware analysis report

Static analysis result for SHA-256 731999ed0652b2bd…

MALICIOUS

PDF

34.5 KB Created: 2021-07-02 04:54:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: e43a415bffd659334380d79b73db5a06 SHA-1: a8fd0d3393ac849275d95a3a901f7aa2ade9448c SHA-256: 731999ed0652b2bd4368d9fdc1504cb04dfdd20e16ccd1a759069740bcdcaefd
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs that lead to pages offering game hacks and cheats, suggesting a lure for users to download potentially malicious content. The ML classifier and PDF link farm heuristics strongly indicate malicious intent, likely to distribute malware or facilitate scams. The presence of a 'download button' lure further supports this conclusion.

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/free-geometry-dash-roblox-odes-game-hack PDF link annotation
    • http://sistem.amikomsolo.ac.id/perpus/repository/minecraft-java-free_GM479516143.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/roblox-do-you-need-an-anti-cheat_GM431946152.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/free-completed-shirt-template-roblox_GM431946152.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/roblox-hack-apk-2021_GM431946152.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/invisible-hack-roblox-prison-life-withe-cheat-engine_GM431946152.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/coin-master-coins-free_GM406889139.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/hack-asssassin-roblox_GM431946152.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/how-to-get-free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/free-stuff-on-roblox-catalog-2021_GM431946152.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/how-do-you-get-free-skins-in-roblox_GM431946152.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/how-to-code-a-roblox-script-executor-hack_GM431946152.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/fazbear-free-robux-scam_GM431946152.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/roblox-iron-man-suit-free_GM431946152.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/free-robux-no-human-verification-no-survey-ios_GM431946152.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/free-robux-no-verify-real-hack_GM431946152.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/como-ser-hacker-en-roblox-2021_GM431946152.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/get-free-robux-without-survey_GM431946152.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/roblox-apocalypse-rising-hack_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_off00003047.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3047 21724 bytes
SHA-256: 8037c9a5ad4214b973d82f98ab7282c4cc3d86355e20f107a10aaac509f329cd
font_01_sfnt_off00005ff9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FF9 19704 bytes
SHA-256: 76d66c27f24fd935aa1d820bb0d5a770357c500d800efed8d87122d67e7c427a

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