Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d36d595768d596b…

MALICIOUS

PDF

44.1 KB Created: 2021-06-03 04:48:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: f575d6f529a786e0e70e63eac9115116 SHA-1: 2927e3c8a508c26b7e676db64ba121e6a79f3eb5 SHA-256: 5d36d595768d596b711169ab2a2064f1d7d8764d89e8748a91ef959f74af4943
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a high-confidence heuristic indicating it links to a game hack lure. The document body and embedded URLs reinforce this, pointing to a URL associated with 'coin-master-hack-download-apk-game-hack'. This suggests the primary goal is to trick the user into clicking the link to download a purported game hack, which is likely malicious.

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-hack-download-apk-game-hack PDF link annotation
    • http://lib.stimykpn.ac.id/repository/robux-free-c_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/mcpe-hack-client_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/earn-robux-today-earn-robux-today_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/minecraft-free-no-virus_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/minecraft-ps4-free_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-free-spins-link-download-ios_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-free-spins-link-2021-hack_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-hack-scripts-pastebin_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/pokemon-go-free-3-remote-raid-pass_GM1094591345.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-daily-free-spins-link-today-blogspot_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/freer-pro-tiktok-fans_GM835599320.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-demon_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/robux-generators-that-actually-work_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-robux-apk_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/best-free-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-spin-hack-app_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-robux-codes-not-used_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/pubg-uc-shop-myanmar_GM1330123889.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_off000051d3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51D3 24336 bytes
SHA-256: fef4cbf9c05d259980e971ad8d67a05a6150cee3538b1cf45e321911c6b31a29
font_01_sfnt_off00008935.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8935 18472 bytes
SHA-256: a0b4f907e64f54d1e36da46d63ed408052d589db2dcff26c8dd3e6dd691bcc85

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