Malicious PDF — malware analysis report

Static analysis result for SHA-256 a59116dfc29bd23c…

MALICIOUS

PDF

43.9 KB Created: 2021-06-03 20:11:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 3bb6a4f8d4a4f81728ddc45d56648ba6 SHA-1: a01a021e7cee246e8c103f90bb62bf23e27e01c9 SHA-256: a59116dfc29bd23cc7bcd4b79c8308c19a0a0412f1854ed1f3a5ecaed3810581
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/coin-master-daily-free-spins-2021-game-hack PDF link annotation
    • http://digilib-unirow.ac.id/repository/minecraft-free-minecoins_GM479516143.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/coin-master-free-spin-link-twitter_GM406889139.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/pubg-uc-rate-in-india_GM1330123889.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/minecraft-survival-hacks_GM479516143.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/cute-free-stuff-on-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/roblox-free-models_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/minecraft-images-free_GM479516143.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/free-spins-for-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/coin-master-daily-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/coin-master-free-spins-haktuts_GM406889139.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/mcpe-download_GM479516143.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/free-pet-treats-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/how-to-get-free-likes-on-tiktok-for-free_GM835599320.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/how-to-get-more-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/master-coin-free-spin_GM406889139.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/how-to-get-free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/coin-master-hack-club_GM406889139.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/coin-master-hack-app-2021_GM406889139.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/no-human-verification-hack-for-coin-master_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_004_off00004f4d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F4D 25112 bytes
SHA-256: 16aceb7b4cdb5cfa09438313f5314a3be398771c64099a876afcb83edc1732ac
font_01_sfnt_off000087b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87B0 18708 bytes
SHA-256: 0e09573a858265cfc65c534eb28458a66078312e2bd7bae94317e03ea41fcd19

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