Malicious PDF — malware analysis report

Static analysis result for SHA-256 3041a8650604d52f…

MALICIOUS

PDF

45.8 KB Created: 2021-05-12 14:05:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 1dd71ee3950cde63e1ddab936421e609 SHA-1: d31962790e2683247c85d37b08681d1bc024864e SHA-256: 3041a8650604d52f367f00de902ddf9b4799eb3126f863f25e8113a566f6a730
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 0.9432

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/406889139/coin-master-apk-hack-2021-ios-game-hack PDF link annotation
    • http://perpustakaan.stie-alanwar.ac.id/sirkulasi/repository/free-executor-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stie-alanwar.ac.id/sirkulasi/repository/robuxfree-con_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stie-alanwar.ac.id/sirkulasi/repository/www-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stie-alanwar.ac.id/sirkulasi/repository/john-doe-roblox-hacker_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stie-alanwar.ac.id/sirkulasi//repository/latest-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stie-alanwar.ac.id/sirkulasi/repository/how-to-get-free-chest-in-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stie-alanwar.ac.id/sirkulasi//repository/boku-no-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stie-alanwar.ac.id/sirkulasi//repository/free-robux-giveaway_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stie-alanwar.ac.id/sirkulasi/repository/coin-master-free-spins-link-cheat_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stie-alanwar.ac.id/sirkulasi//repository/coin-master-freebies-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stie-alanwar.ac.id/sirkulasi/repository/hack-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stie-alanwar.ac.id/sirkulasi/repository/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stie-alanwar.ac.id/sirkulasi//repository/how-to-coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stie-alanwar.ac.id/sirkulasi/repository/coin-master-free_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stie-alanwar.ac.id/sirkulasi/repository/rewardrobux-com_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stie-alanwar.ac.id/sirkulasi/repository/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stie-alanwar.ac.id/sirkulasi/repository/easy-coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stie-alanwar.ac.id/sirkulasi//repository/minecraft-servers-that-allow-hacks_GM479516143.pdfIn PDF document text
    • http://perpustakaan.stie-alanwar.ac.id/sirkulasi//repository/coin-master-hack-online-link_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stie-alanwar.ac.id/sirkulasi//repository/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004bad.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BAD 24556 bytes
SHA-256: 22f0e2f0c38f709fd3635b63debc7096ec0ffdfa2a76afaf643de74481622d72
font_01_sfnt_off000083fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83FC 3560 bytes
SHA-256: c953d730e49f69c7d62e02a926729ae4a31de13d9a976dc4a95b39cf47066c93
font_02_sfnt_off00009081.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9081 18296 bytes
SHA-256: 279b0b1c893eba727ec0845632f3a3712edc40ddf848fb82c48fddf2681f3228

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