Malicious PDF — malware analysis report

Static analysis result for SHA-256 281fd5e731d8fd30…

MALICIOUS

PDF

33.7 KB Created: 2021-07-05 10:55:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 7e917b3ae2afd10188e5c14ad68d63a6 SHA-1: 887ecc0a703295910f614ab9336449a768d05b4c SHA-256: 281fd5e731d8fd30b0760c7ddc195474e5d3640cfa6896623eef28383c04b7a0
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/hack-coin-master-apk-2021-game-hack PDF link annotation
    • http://perpus.masda.ac.id/repository/how-get-free-stuff-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/case-clicker-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-hack-ronlox-infinity-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/free-robux-games_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/roblox-robux-with-cheat-engine_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/get-free-obc-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/minecraft-story-mode-free_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-game-free-play-online_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-get-a-cape-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/hack-velocidad-x3-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/mad-city-roblox-hack-client_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-pair-of-glasses-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/roblox-hack-apk_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-free-spins-link-2021-ios_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/pokemon-go-free-zip_GM1094591345.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-attack-hack-apk_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-robux-codes-website_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-robux-scams_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_002_off00002dc6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2DC6 22408 bytes
SHA-256: 958ae7013241468c225b47b9ff5faf7df724e530cf851de749f700ce6f92694a
font_01_sfnt_off00005fb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FB4 18580 bytes
SHA-256: 3c3cf7eb91a8d1db8b949631b859383b7a8b09fda1b6109b288380fe52f4b0e1

Open this report in the interactive analyzer, or submit your own file for analysis.