Malicious PDF — malware analysis report

Static analysis result for SHA-256 86273bc2eadb93de…

MALICIOUS

PDF

40.9 KB Created: 2021-05-19 23:32:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 5e7893f97ef34b60f61c02db36cf8d8e SHA-1: 69a5ce421b80ad445ffbfa011a14ca291b2bfc91 SHA-256: 86273bc2eadb93de7e2bd41b1272f7f589fdef40c529c31afb08a2fccca6d0fd
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 0.9971

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.xyz/app/1094591345/pokemon-go-free-online-game-game-hack PDF link annotation
    • http://muslib.unmus.ac.id/repository/coin-master-free-spins-coins_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/can-you-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/minecraft-hack-app_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-deals_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/youtube-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-daily-free-spins-haktuts_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/free-spins-coin-master-links-twitter_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-free-coins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/rewards-roblox-com_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/claim-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/apps-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/free-promo-codes-for-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/minecraft-java-server-hosting-free_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/minecraft-win-10-free_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-spin-links-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/toolbox-for-minecraft-ios_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-claim-spins_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_003_off00004700.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4700 24264 bytes
SHA-256: bc17b15615f851a4360edf4371c8b05522d5d7c005b6e0c0501403140bd40fe5
font_01_sfnt_off00007dec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DEC 18264 bytes
SHA-256: b77b6b4cc5da785e039f88540b034e5c38b2d3ab051bd4a7518fc8563b3a089d

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