Malicious PDF — malware analysis report

Static analysis result for SHA-256 17693e5939cf3be6…

MALICIOUS

PDF

35.6 KB Created: 2021-07-03 10:53:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: f2d8cdc26943628ad01e9c9664f2b668 SHA-1: 09551c9f720153c18174240804209f8d51e8e6c0 SHA-256: 17693e5939cf3be6edf5b31890f7487e0309b0724a741b255bd6f565fa26aad0
102 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded URLs, many of which are structured as SEO-optimized links for game hacks and cheats, indicating a link farm or phishing attempt. The heuristic 'PDF_SEO_LINK_FARM' specifically identified this pattern, suggesting the document's primary purpose is to redirect users to external sites that may host malicious content or facilitate scams. The ML classifier also strongly indicated maliciousness.

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/406889139/coin-master-free-400-spin-link-game-hack PDF link annotation
    • http://elearning.man1acehselatan.sch.id/__statics/gudangsoal/files/how-to-hack-coin-master-cheat-engine_GM406889139.pdfIn PDF document text
    • http://elearning.man1acehselatan.sch.id/__statics/gudangsoal/files/coin-master-free-spins-app-for-iphone_GM406889139.pdfIn PDF document text
    • http://elearning.man1acehselatan.sch.id/__statics/gudangsoal/files/roblox-jailbroken-hack_GM431946152.pdfIn PDF document text
    • http://elearning.man1acehselatan.sch.id/__statics/gudangsoal/files/how-do-you-get-admin-by-hacking-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.man1acehselatan.sch.id/__statics/gudangsoal/files/coin-master-free-attack-hack_GM406889139.pdfIn PDF document text
    • http://elearning.man1acehselatan.sch.id/__statics/gudangsoal/files/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://elearning.man1acehselatan.sch.id/__statics/gudangsoal/files/pokemon-go-free-codes-november-2021_GM1094591345.pdfIn PDF document text
    • http://elearning.man1acehselatan.sch.id/__statics/gudangsoal/files/roblox-hacked-twitter_GM431946152.pdfIn PDF document text
    • http://elearning.man1acehselatan.sch.id/__statics/gudangsoal/files/lazy-blocks-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.man1acehselatan.sch.id/__statics/gudangsoal/files/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.man1acehselatan.sch.id/__statics/gudangsoal/files/how-to-hack-coin-master-apkmody_GM406889139.pdfIn PDF document text
    • http://elearning.man1acehselatan.sch.id/__statics/gudangsoal/files/coin-master-game-android-free-download_GM406889139.pdfIn PDF document text
    • http://elearning.man1acehselatan.sch.id/__statics/gudangsoal/files/coin-master-hack-without-verification-code_GM406889139.pdfIn PDF document text
    • http://elearning.man1acehselatan.sch.id/__statics/gudangsoal/files/cookies-to-buy-robux-free_GM431946152.pdfIn PDF document text
    • http://elearning.man1acehselatan.sch.id/__statics/gudangsoal/files/how-to-get-free-followers-on-tiktok-without-verification_GM835599320.pdfIn PDF document text
    • http://elearning.man1acehselatan.sch.id/__statics/gudangsoal/files/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://elearning.man1acehselatan.sch.id/__statics/gudangsoal/files/free-robux-wheel_GM431946152.pdfIn PDF document text
    • http://elearning.man1acehselatan.sch.id/__statics/gudangsoal/files/hack-coin-master-android-game_GM406889139.pdfIn PDF document text
    • http://elearning.man1acehselatan.sch.id/__statics/gudangsoal/files/roblox-noclip-free_GM431946152.pdfIn PDF document text
    • http://elearning.man1acehselatan.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-fast_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_off000033a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33A8 23096 bytes
SHA-256: 7b6d826a86d1f1b874153eeaa41c4c46efd18a7447df7443e5fe1ffdeb9cf89a
font_01_sfnt_off0000679a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x679A 18576 bytes
SHA-256: 03cfcee3629fde15fc54ef21dd04dbc20dfbd27d31ac9ca7d4de5a8c615e5409

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