Malicious PDF — malware analysis report

Static analysis result for SHA-256 69e555c81faaa661…

MALICIOUS

PDF

35.7 KB Created: 2021-07-05 04:29:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 0ad077d32f752bae3abe32a8c6061c3e SHA-1: 8fdfc5ada54224506657bebdc08c3cb04a5b2d95 SHA-256: 69e555c81faaa661c0e33c2c6c19f3679aea891ca95979c86410307b25d44118
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/pig-master-free-coins-and-spins-game-hack PDF link annotation
    • http://fkunismuh.org/perpustakaan//repository/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/how-to-hack-coin-master-ios-jailbreak_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/google-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/how-do-you-get-free-food-in-coin-master_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/rbx-website_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/free-robux-discord-servers_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/free-robux-co_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/roblox-free-black-adidas-t-shirt_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/free-spins-coin-master-links-blogspot_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/minecraft-education-free_GM479516143.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/minecraft-ps3-free-download_GM479516143.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/free-robux-easy_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/hmm-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/coin-master-free-spin-and-coins-links_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/free-minecraft-account-and-password_GM479516143.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/free-robux-cards_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/coin-master-15-free-spin-link-of-last-5-days_GM406889139.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
stream_002_off000033f4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33F4 23156 bytes
SHA-256: d3a13d1f37bfb7b874acab71e2cc924efdb97d4c14a9ed8e78bf6bca89afa446
font_01_sfnt_off00006869.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6869 18504 bytes
SHA-256: 4a9856cc4221cd6b4125ca063392c37abdc4543c3603510ef56bcd4a520794b3

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