Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a8ac28a1006fda0…

MALICIOUS

PDF

44.7 KB Created: 2021-06-03 08:14:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: e1864e466928d9fec076b52c5f3f519a SHA-1: 14524ec757e5ea4b5d1154eca12d9ccfa0aa1703 SHA-256: 6a8ac28a1006fda076384e426161a5470792a9c862e3f6e59a73f4173f17ec4d
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 0.9865

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 https://netcdn.online/app/406889139/free-spins-coin-master-android-game-hack PDF link annotation
    • http://digilib.unla.ac.id/repository/coin-master-free-spin-best-link_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/how-to-hack-roblox-passwords_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/descargar-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/free-robux-no-downloading-apps_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/free-robux-scam_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/roblox-studio-free_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/easy-robux-generator_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/bux-gg-robux-free_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/pokemon-go-free-promo-codes-2021_GM1094591345.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/facebook-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-free-coins-and-spins-group_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-free-spins-heaven_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/reddit-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-free-attack-link_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/daily-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/rbxoffers-com-free-robux_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
stream_004_off000052cd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52CD 25376 bytes
SHA-256: 42ecbfc56426d32f55567249268655a63def0b6df1d6e4ca4e476f0e107606c6
font_01_sfnt_off00008cb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CB0 18060 bytes
SHA-256: bb87bb437521cd022de534ae7fd6b6624f0fed030f820aba0cb18b6212db1e0f