Malicious PDF — malware analysis report

Static analysis result for SHA-256 712143a11ab3638b…

MALICIOUS

PDF

34.1 KB Created: 2021-06-28 05:11:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 4c406e232655af18a7fbd00afe4a36b9 SHA-1: d966713cd9d2d9b7aadcc6d098131ec13bb50420 SHA-256: 712143a11ab3638b39c372b56ef03a0ebe12dc1fa44dd8f8016edbbb8af81e81
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are SEO-optimized pages likely serving as a link farm. The primary URL, http://netcdn.co/app/431946152/anarchy-hack-roblox-game-hack, suggests a lure for game-related exploits or downloads. The ML classifier strongly flagged this PDF as malicious, and the presence of a download button lure reinforces the malicious intent. No scripts were extracted, but the overall structure and linked content indicate a phishing or malware distribution attempt.

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/anarchy-hack-roblox-game-hack PDF link annotation
    • https://katalog.smkn1glagah.sch.id/repository/cheat-codes-for-roblox-free-robux_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/bloxland-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/free-robux-without-survey_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/free-coins-for-planet-master-game_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/roblox-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/coin-master-15-free-spin-link-today_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/how-to-get-free-stuff-roblox-march-2021_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/roblox-pokemon-brick-bronze-how-to-get-free-pokemon_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/app-free-robux-pc_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/www-coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/gete-free-robux_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/free-robux-no-verification-at-all_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/how-to-hack-golden-card-in-coin-master_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/freerobuxhack-us_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/how-to-download-hacks-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/robux-free-really-pls_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/twitter-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/minecraft-launcher-free_GM479516143.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_off00002ee5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EE5 22184 bytes
SHA-256: 5bd391679c842e163edd854147a9349d9729f30fec0b2bf4ffc92e21f5c61e29
font_01_sfnt_off00006037.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6037 19004 bytes
SHA-256: 7ddb5956ea2b71926e862785f7f400533c43676f3a0460b416bf31288f9159d4

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