Malicious PDF — malware analysis report

Static analysis result for SHA-256 c89145ee414105c0…

MALICIOUS

PDF

33.1 KB Created: 2021-06-30 17:34:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 83b5fc45a4cdc2b4acbca27a5723aaa1 SHA-1: 3b5201dd7f1fc8d8f51694b87786f5822248e40c SHA-256: c89145ee414105c03981286b87821a38e69f661334a76c0af4ccd52df53807bc
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains links and text related to game hacks and generators, specifically mentioning Minecraft and Coin Master. The primary link, http://netcdn.co/app/479516143/minecraft-svg-free-game-hack, is identified as a lure to a redirector. While no scripts were extracted, the document's structure and embedded URLs strongly suggest a social engineering tactic to direct users to potentially malicious websites. The ML classifier also flagged this PDF as malicious with high confidence.

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.co/app/479516143/minecraft-svg-free-game-hack PDF link annotation
    • https://elearning.man2semarang.sch.id/__statics/gudangsoal/files/free-spins-for-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://elearning.man2semarang.sch.id/__statics/gudangsoal/files/hack-coin-master-for-free_GM406889139.pdfIn PDF document text
    • https://elearning.man2semarang.sch.id/__statics/gudangsoal/files/www-roblox-com-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man2semarang.sch.id/__statics/gudangsoal/files/coin-mster-free_GM406889139.pdfIn PDF document text
    • https://elearning.man2semarang.sch.id/__statics/gudangsoal/files/minecraft-modded-client_GM479516143.pdfIn PDF document text
    • https://elearning.man2semarang.sch.id/__statics/gudangsoal/files/free-robux-without-offers_GM431946152.pdfIn PDF document text
    • https://elearning.man2semarang.sch.id/__statics/gudangsoal/files/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://elearning.man2semarang.sch.id/__statics/gudangsoal/files/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • https://elearning.man2semarang.sch.id/__statics/gudangsoal/files/free-robux-giveaway_GM431946152.pdfIn PDF document text
    • https://elearning.man2semarang.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • https://elearning.man2semarang.sch.id/__statics/gudangsoal/files/coin-master-cheats-and-hacks_GM406889139.pdfIn PDF document text
    • https://elearning.man2semarang.sch.id/__statics/gudangsoal/files/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • https://elearning.man2semarang.sch.id/__statics/gudangsoal/files/coin-master-computer-hack_GM406889139.pdfIn PDF document text
    • https://elearning.man2semarang.sch.id/__statics/gudangsoal/files/free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • https://elearning.man2semarang.sch.id/__statics/gudangsoal/files/free-minecraft-bedrock-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • https://elearning.man2semarang.sch.id/__statics/gudangsoal/files/coin-master-card-collection-link_GM406889139.pdfIn PDF document text
    • https://elearning.man2semarang.sch.id/__statics/gudangsoal/files/free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • https://elearning.man2semarang.sch.id/__statics/gudangsoal/files/roblox-2021-hack_GM431946152.pdfIn PDF document text
    • https://elearning.man2semarang.sch.id/__statics/gudangsoal/files/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://elearning.man2semarang.sch.id/__statics/gudangsoal/files/minecraft-dungeons-free-download_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003134.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3134 21236 bytes
SHA-256: f59727675522765b2401b293865bd4eb92d14fdd4197837f902ae9da667bbbfc
font_01_sfnt_off00005f96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F96 17968 bytes
SHA-256: f82c060a5662ddcca675aec0cfac04b32032cde6baf3a8524f802f6fcb7e6d40

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