Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbdf734d8e4845a7…

MALICIOUS

PDF

35.9 KB Created: 2021-07-01 19:35:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-12
MD5: b91af59ef234e81e90d65d17907ca3fa SHA-1: 78f0165d99d01cc39ad4ae21e3137262f9b727f8 SHA-256: bbdf734d8e4845a7dd44e6fa9dd910f964a31c0809dd5499fd7733df96856213
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to what appears to be a link farm designed to distribute malicious content, such as fake game hacks. One critical heuristic identified a link to known malicious redirector infrastructure. The document body also contains a direct link to a malicious URL, suggesting a lure for users to download potentially harmful files or visit phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/como-obrtener-10.000-robux-de-verdad-hack-game-hack In PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/roblox-creepy-april-foools-hack-face_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/money-hack-sur-sunset-city-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/coin-master-hack-unlimited-spins-game-download_GM406889139.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id//repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/freerobuxdd_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/free-appsfor-coin-master-daily-rewards_GM406889139.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id//repository/best-free-minecraft-servers_GM479516143.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id//repository/wurst-download_GM479516143.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/how-to-get-a-free-shirt-on-roblox-without-bc_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/minecraft-hacks-pc_GM479516143.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/coin-master-pet-food-hack_GM406889139.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/roblox-prison-life-v2-0-hack-exploit_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/free-robux-for-xbox-for-kids_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id//repository/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/texte-pour-hacker-des-robux_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/simple-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/coin-master-100-spin-slot_GM406889139.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/roblox-free-promo-codes-2021-may_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_off0000336a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x336A 22352 bytes
SHA-256: 1cbf8854bbd59810eb752b6869fdd404d872c1bdcab3b10d261c5c05f233f120
font_01_sfnt_off000064eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64EB 19908 bytes
SHA-256: 222d189ac4f23ce9fa46d0e9132b10e382314913a2b42e4ffa11d8a5efe1f15a

Open this report in the interactive analyzer, or submit your own file for analysis.