Malicious PDF — malware analysis report

Static analysis result for SHA-256 0504834918ab8737…

MALICIOUS

PDF

45.2 KB Created: 2021-06-13 22:59:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 67af1b46c7c4d8485ad8f1876304e389 SHA-1: 559175b7b453b945971d6862428b7c113be1b9f3 SHA-256: 0504834918ab87370b53d4afdf9d13219c882fb9463ddbf4eaa1b5145a458c9c
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links, many of which are structured as a link farm pointing to other PDF documents, suggesting an attempt to manipulate search engine results or distribute various potentially unwanted programs. The document body and extracted URLs explicitly mention "Roblox Jailbreak Hack Download" and related game cheats, indicating a lure for users seeking such content. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious intent.

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/roblox-jailbreak-hack-download-speed-game-hack
    • http://perpus.sdmuhwirobrajan3.sch.id/repository/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdf
    • http://perpus.sdmuhwirobrajan3.sch.id//repository/how-to-get-free-robux-for-kids_GM431946152.pdf
    • http://perpus.sdmuhwirobrajan3.sch.id//repository/earn-robux-for-roblox_GM431946152.pdf
    • http://perpus.sdmuhwirobrajan3.sch.id//repository/how-to-get-minecraft-pocket-edition-for-free_GM479516143.pdf
    • http://perpus.sdmuhwirobrajan3.sch.id/repository/instant-free-spins-coin-master_GM406889139.pdf
    • http://perpus.sdmuhwirobrajan3.sch.id/repository/how-to-become-a-admin-in-roblox-no-hacks_GM431946152.pdf
    • http://perpus.sdmuhwirobrajan3.sch.id/repository/is-minecraft-free-on-mac_GM479516143.pdf
    • http://perpus.sdmuhwirobrajan3.sch.id/repository/hack-para-jailbreak-roblox-2021_GM431946152.pdf
    • http://perpus.sdmuhwirobrajan3.sch.id//repository/coin-master-daily-free-spins-2021_GM406889139.pdf
    • http://perpus.sdmuhwirobrajan3.sch.id/repository/free-foxy-food-coin-master_GM406889139.pdf
    • http://perpus.sdmuhwirobrajan3.sch.id//repository/free-vpn-for-minecraft_GM479516143.pdf
    • http://perpus.sdmuhwirobrajan3.sch.id//repository/coin-master-hack-app-2021_GM406889139.pdf
    • http://perpus.sdmuhwirobrajan3.sch.id//repository/how-to-get-free-roblox-gift-cards_GM431946152.pdf
    • http://perpus.sdmuhwirobrajan3.sch.id/repository/daily-free-spins-for-coin-master_GM406889139.pdf
    • http://perpus.sdmuhwirobrajan3.sch.id//repository/coin-master-new-cards-hack_GM406889139.pdf
    • http://perpus.sdmuhwirobrajan3.sch.id//repository/www-rbxhut-com_GM431946152.pdf
    • http://perpus.sdmuhwirobrajan3.sch.id/repository/how-to-download-minecraft-java-edition-for-free_GM479516143.pdf
    • http://perpus.sdmuhwirobrajan3.sch.id/repository/free-unlimited-robux-2021_GM431946152.pdf
    • http://perpus.sdmuhwirobrajan3.sch.id/repository/pokemon-go-free-promo-codes-2021_GM1094591345.pdf
    • http://perpus.sdmuhwirobrajan3.sch.id/repository/best-way-to-hack-coin-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000495b.bin
7bb0321dd326e8683447bd77e4ecbca444a70e094712b789ed3d644b71f8f23b		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x495B 28664 bytes
font_01_sfnt_off00008bb6.bin
197c20a5322d0edcf4acae13d6d1fcde53ac0c1eded351ac8fddcb673b8c66f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8BB6 19152 bytes

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