Malicious PDF — malware analysis report

Static analysis result for SHA-256 9218492c7758fa53…

MALICIOUS

PDF

45.9 KB Created: 2021-06-03 06:06:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 91f5919a462509eee0afae9856d32e33 SHA-1: 4b1503eab90ae456efb92f5c504020e90be5eb54 SHA-256: 9218492c7758fa53eb09fe9a8b4e8979f5ddcd801a6c9a8a7c0f9493bf298d41
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains a lure related to 'free spins for Coin Master' and links to external URLs that appear to be generators or hacks. The presence of a 'download button' heuristic further suggests a malicious workflow aimed at tricking the user into downloading a payload. The document's primary purpose is to facilitate the download of a second-stage malicious file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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-for-coin-master-on-1-19-19-game-hack PDF link annotation
    • http://perpus.masda.ac.id/repository/grabpoints-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-today_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/roblox-18_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/pokemon-lets-go-free_GM1094591345.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/minecraft-survival-hacks_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-free-spins-2021-ios_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/free-shields-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/https-iosgodscom-topic-20218flipmastercoinshack_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/mcpe-master-hack-unlimited-coins-apk_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-free-spins-23-march-2021_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/sites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-links-for-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coinmaster-blogspot_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/how-to-get-minecraft-for-free-2021_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-game-packs-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-free-spins-usa-2021_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-attack-madness-hack_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_off000054da.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x54DA 24832 bytes
SHA-256: 82a5f6c56f2fd9239b70aff9d2387474c0786bd7b94b37d29ae6e1faed781c8f
font_01_sfnt_off00008d42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D42 19484 bytes
SHA-256: ad8b530556c370507fa3ae3a25b23f7d92fe580ce63d1c0d71350bfca10fbb09

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