Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1d54b52f17f37c7…

MALICIOUS

PDF

33.8 KB Created: 2021-06-24 21:30:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: eca4971b066e4197895f4fa13551e7cb SHA-1: 60af23f0157ac189cffc77ff50a7074112a2eb38 SHA-256: a1d54b52f17f37c754a994a5c43b487ed9d2fbe00bda2261784ba9d9e045651c
102 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which are related to game hacks and cheats, suggesting a lure to download malicious content. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs and a link farm further supports this assessment. The document's content and structure indicate an attempt to trick users into clicking links that likely lead to malware or exploit kits.

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/woman-roblox-game-hack
    • http://e-learning.mialislamiyahckp.sch.id/__statics/gudangsoal/files/coin-master-hack-tool-v1-9-pc_GM406889139.pdf
    • http://e-learning.mialislamiyahckp.sch.id/__statics/gudangsoal/files/mangocheats-com-hack-coin-master-cheat_GM406889139.pdf
    • http://e-learning.mialislamiyahckp.sch.id/__statics/gudangsoal/files/roblox-online-free_GM431946152.pdf
    • http://e-learning.mialislamiyahckp.sch.id/__statics/gudangsoal/files/lazy-blocks-com-free-robux_GM431946152.pdf
    • http://e-learning.mialislamiyahckp.sch.id/__statics/gudangsoal/files/coin-master-heaven-free-spins-link-2021-today_GM406889139.pdf
    • http://e-learning.mialislamiyahckp.sch.id/__statics/gudangsoal/files/free-minecraft-skins-pe_GM479516143.pdf
    • http://e-learning.mialislamiyahckp.sch.id/__statics/gudangsoal/files/coin-master-viking-quest-hack_GM406889139.pdf
    • http://e-learning.mialislamiyahckp.sch.id/__statics/gudangsoal/files/safe-hack-for-coin-master-android_GM406889139.pdf
    • http://e-learning.mialislamiyahckp.sch.id/__statics/gudangsoal/files/coin-master-free-spins-daily_GM406889139.pdf
    • http://e-learning.mialislamiyahckp.sch.id/__statics/gudangsoal/files/roblox-catalog-free_GM431946152.pdf
    • http://e-learning.mialislamiyahckp.sch.id/__statics/gudangsoal/files/free-robux-for-watching-adds_GM431946152.pdf
    • http://e-learning.mialislamiyahckp.sch.id/__statics/gudangsoal/files/free-unused-roblox-accountsno-robux_GM431946152.pdf
    • http://e-learning.mialislamiyahckp.sch.id/__statics/gudangsoal/files/minecraft-java-edition-download-free_GM479516143.pdf
    • http://e-learning.mialislamiyahckp.sch.id/__statics/gudangsoal/files/minecraft-free-play-no-download_GM479516143.pdf
    • http://e-learning.mialislamiyahckp.sch.id/__statics/gudangsoal/files/mcpe-hack-client_GM479516143.pdf
    • http://e-learning.mialislamiyahckp.sch.id/__statics/gudangsoal/files/free-spins-on-coin-master-without-human-verification_GM406889139.pdf
    • http://e-learning.mialislamiyahckp.sch.id/__statics/gudangsoal/files/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdf
    • http://e-learning.mialislamiyahckp.sch.id/__statics/gudangsoal/files/how-to-hack-a-roblox-account-easy_GM431946152.pdf
    • http://e-learning.mialislamiyahckp.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-easy-no-download_GM431946152.pdf
    • http://e-learning.mialislamiyahckp.sch.id/__statics/gudangsoal/files/coin-master-daily-spin-free_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f33.bin
6065427a5816c56b76820fa4f0f621ac3b68d422adf5cd3459e83bb75dca0d1c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2F33 21892 bytes
font_01_sfnt_off00005f71.bin
99893507a42f3e58ba14e855442a75d2460821b48007dc0e8edfe894ba93b9d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F71 18944 bytes

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