Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fcc8749417ee4e4…

MALICIOUS

PDF

35.9 KB Created: 2021-07-04 00:38:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: e486797a32f32ae05cdca65bd17636e0 SHA-1: b6f656582553a7ecb87cab1bc72b13c5b05d6f39 SHA-256: 3fcc8749417ee4e4ef83dab42ea112ebd824db546190b3d9e4748bab4b7f1524
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • 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.tw/app/406889139/coin-master-game-free-spin-download-game-hack PDF link annotation
    • https://elearning.min1kebumen.sch.id/__statics/gudangsoal/files/free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • https://elearning.min1kebumen.sch.id/__statics/gudangsoal/files/roblox-builders-club-free-in-2021_GM431946152.pdfIn PDF document text
    • https://elearning.min1kebumen.sch.id/__statics/gudangsoal/files/roblox-games-com-free_GM431946152.pdfIn PDF document text
    • https://elearning.min1kebumen.sch.id/__statics/gudangsoal/files/descargar-roblox-hackeado-con-robux-infinitos-2021_GM431946152.pdfIn PDF document text
    • https://elearning.min1kebumen.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • https://elearning.min1kebumen.sch.id/__statics/gudangsoal/files/coin-master-hack-tuts_GM406889139.pdfIn PDF document text
    • https://elearning.min1kebumen.sch.id/__statics/gudangsoal/files/free-roblox-clothes-templates_GM431946152.pdfIn PDF document text
    • https://elearning.min1kebumen.sch.id/__statics/gudangsoal/files/legit-coin-master-hack-site-zyngaplayerforumscom_GM406889139.pdfIn PDF document text
    • https://elearning.min1kebumen.sch.id/__statics/gudangsoal/files/roblox-app-cheats_GM431946152.pdfIn PDF document text
    • https://elearning.min1kebumen.sch.id/__statics/gudangsoal/files/minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • https://elearning.min1kebumen.sch.id/__statics/gudangsoal/files/games-for-robux_GM431946152.pdfIn PDF document text
    • https://elearning.min1kebumen.sch.id/__statics/gudangsoal/files/for-free-for-robloxcom-mobile4free24com_GM431946152.pdfIn PDF document text
    • https://elearning.min1kebumen.sch.id/__statics/gudangsoal/files/cool-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://elearning.min1kebumen.sch.id/__statics/gudangsoal/files/free-3-letter-names-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.min1kebumen.sch.id/__statics/gudangsoal/files/free-roblox-templates_GM431946152.pdfIn PDF document text
    • https://elearning.min1kebumen.sch.id/__statics/gudangsoal/files/mcpe-download_GM479516143.pdfIn PDF document text
    • https://elearning.min1kebumen.sch.id/__statics/gudangsoal/files/coin-master-hack-progamers_GM406889139.pdfIn PDF document text
    • https://elearning.min1kebumen.sch.id/__statics/gudangsoal/files/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • https://elearning.min1kebumen.sch.id/__statics/gudangsoal/files/free-robux-com-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.min1kebumen.sch.id/__statics/gudangsoal/files/give-me-robux-now_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_off00003515.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3515 22588 bytes
SHA-256: 475f7b84c2cd973866cfd5f0ab75f86ce98a38a6eacb1333d26f4e6207abdcb6
font_01_sfnt_off000067b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67B6 19012 bytes
SHA-256: 17486649f648fd9bcd344c958c2e1ea953e43ba0b68fa99ca3b1e88f246af38c

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