Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbb061d887d67a6e…

MALICIOUS

PDF

36.3 KB Created: 2021-06-30 13:16:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 0fa17a72f0a7b7eb57ad315f71779b2a SHA-1: 0e817e3856e2de0aadcf468bb0aed4de79621779 SHA-256: fbb061d887d67a6e105802abb2b9e714790ddd176c6294fe5eab73ceaeff738e
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to websites offering game cheats and hacks, as indicated by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. The document body and extracted URLs suggest a lure for users seeking in-game advantages, likely leading to malicious downloads or phishing. No scripts were extracted from this sample, but the presence of malicious redirectors and the ML classification strongly indicate a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 3

  • 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.
  • 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/www.cheatsguru.com-pc-roblox-cheats-codes-game-hack In PDF document text
    • http://elearning.madagresik.sch.id/__statics/gudangsoal/files/pastebin-robux-account-hack-2021_GM431946152.pdfIn PDF document text
    • http://elearning.madagresik.sch.id/__statics/gudangsoal/files/coin-master-free-spins-links-2021_GM406889139.pdfIn PDF document text
    • http://elearning.madagresik.sch.id/__statics/gudangsoal/files/inappropriate-roblox-games_GM431946152.pdfIn PDF document text
    • http://elearning.madagresik.sch.id/__statics/gudangsoal/files/how-to-make-a-modded-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://elearning.madagresik.sch.id/__statics/gudangsoal/files/free-robux-codes-generator_GM431946152.pdfIn PDF document text
    • http://elearning.madagresik.sch.id/__statics/gudangsoal/files/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://elearning.madagresik.sch.id/__statics/gudangsoal/files/robux-hack-pc-2021_GM431946152.pdfIn PDF document text
    • http://elearning.madagresik.sch.id/__statics/gudangsoal/files/free-dominus-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.madagresik.sch.id/__statics/gudangsoal/files/blox-pink-robux-free_GM431946152.pdfIn PDF document text
    • http://elearning.madagresik.sch.id/__statics/gudangsoal/files/hacker-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.madagresik.sch.id/__statics/gudangsoal/files/free-minecraft-client_GM479516143.pdfIn PDF document text
    • http://elearning.madagresik.sch.id/__statics/gudangsoal/files/how-to-hack-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://elearning.madagresik.sch.id/__statics/gudangsoal/files/roblox-hack-com_GM431946152.pdfIn PDF document text
    • http://elearning.madagresik.sch.id/__statics/gudangsoal/files/free-coin-master-spins-without-human-verification_GM406889139.pdfIn PDF document text
    • http://elearning.madagresik.sch.id/__statics/gudangsoal/files/free-coin-spin-daily-link-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.madagresik.sch.id/__statics/gudangsoal/files/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://elearning.madagresik.sch.id/__statics/gudangsoal/files/roblox-hack-no-virus-no-survey_GM431946152.pdfIn PDF document text
    • http://elearning.madagresik.sch.id/__statics/gudangsoal/files/coin-master-free-spins-1701-20_GM406889139.pdfIn PDF document text
    • http://elearning.madagresik.sch.id/__statics/gudangsoal/files/free-coins-and-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://elearning.madagresik.sch.id/__statics/gudangsoal/files/gui-hacks-roblox_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_off00003443.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3443 22376 bytes
SHA-256: 3fce8f4e4f2dbbb7cc2b113dc5f2aa20cb202c058d7550d2b724886c0a8d664b
font_01_sfnt_off0000664b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x664B 19912 bytes
SHA-256: 2f4fb9a575f51c16fe2a6267f5199f0a74594b153af23676d3f03fa8ef1b623e

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