Malicious PDF — malware analysis report

Static analysis result for SHA-256 04173ad9e6c2e683…

MALICIOUS

PDF

33.7 KB Created: 2021-07-06 12:01:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 5edff3ab3d72e4c9602c0a5bfe904303 SHA-1: 0b7fcad1e1564b64d921aeb9813cd9dcd3c33894 SHA-256: 04173ad9e6c2e68305f01472c94107b5f654c03e90ad6623894f321aca8c5334
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains numerous embedded links, many of which point to external resources offering game hacks and cheats. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of such links, suggesting a deceptive attempt to drive traffic to potentially malicious sites. The ML classifier also strongly flagged this PDF as malicious.

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.tw/app/431946152/roblox-prison-escape-hack-game-hack PDF link annotation
    • http://digilib.ulm.ac.id/pusat/repository/coin-master-hack-for-android_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/minecraft-redeem-code-free-2021_GM479516143.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/yt-fmm-roblox-hack_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-coins-and-spins-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/roblox-free-admin-commands-list_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/how-to-hack-coin-master-with-game-guardian_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/6-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/noclip-hack-for-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/robux-robux_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/roblox-images_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/visenya-roblox-free_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/how-do-you-get-free-robux-without-pastibein-raw_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/minecraft-for-laptop-free_GM479516143.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/best-roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/coin-master-free-spins-and-coins-today_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/microsoft-bing-robux_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/how-to-hack-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/offers-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F4C 21768 bytes
SHA-256: fbec252f9529db917dd4093f52d04c53c6cdff9da314dd557a89215db5eebe8e
font_01_sfnt_off00005f11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F11 18920 bytes
SHA-256: 1f5e9d80e0eeae468dfe3af7c86b9e21edd953d2ec2d0771f23576451780678b

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