Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cdcd72084cb896f…

MALICIOUS

PDF

44.7 KB Created: 2021-06-03 08:09:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 447c252c44a520d7903bad22f182f3fd SHA-1: d73a345e5b22bc7aa754e1878aff5c6ab4b64905 SHA-256: 0cdcd72084cb896f367f70b532ec4688c77519211a932c46f6969ad559682dd3
102 Risk Score

Malware Insights

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

This PDF document contains numerous links to external websites, many of which appear to be part of a link farm designed to host game-related hacks and free items. The presence of a 'download button' heuristic and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content. The document's content and structure strongly suggest a lure for users seeking in-game advantages, which is a common social engineering tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/431946152/roblox-free-clothes-girl-game-hack PDF link annotation
    • https://perpustakaan.stifar.ac.id/repository/grabpoints-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/coin-master-free-coins-and-spins-group_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/coin-master-free-spins-app-android_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/blogger-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/online-coin-master-hack-here_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/coin-master-hack_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/minecraft-xbox-360-free-download-code_GM479516143.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/how-to-hack-a-minecraft-server-and-make-yourself-op_GM479516143.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/free-robux-no-human-verify_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/150-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/roblox-arsenal-hacks-download_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/hack-version-of-coin-master_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/coin-master-free-coins-and-spins-blogspot_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/rewards-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/coin-master-cards-hack_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/free-roblox-outfits-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/free-spin-coin-master-2021-link_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
stream_004_off00005099.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5099 26560 bytes
SHA-256: 34728f641fc42ac67e990d275e4368233bdbd8cb21e29a08403c6ce7247908b3
font_01_sfnt_off00008be4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BE4 18340 bytes
SHA-256: 43b97e088e2ffab0722e8ce3b94223e5cd299235dccb62a3edb2f682d17634b7

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