Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3113955056ee832…

MALICIOUS

PDF

41.9 KB Created: 2021-04-28 02:34:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 1576f59592a6635660ecf95ef483da09 SHA-1: 09bf452917ac2ca9185bad44d18386b696b4dec6 SHA-256: c3113955056ee83217d94a265604050d749687567f3a56fb9ec80d466d0c6f36
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 0.9941

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/431946152/free-robux-pastebin-hack-2021-game-hack PDF link annotation
    • https://lib-stie.yai.ac.id/repository/roblox-cheats-without-builders-club.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-to-hack-roblox-passwords-2021.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/play-for-free-robux.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-gucci-roblox.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-robux-pastebin-com.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-roblox-giftcardd.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-robux-no-installing-games.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-robux-hack-us-com.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/is-there-any-way-to-get-free-robux.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-robux-raw-pastebin.pdfIn PDF document text
    • https://robux-rank.comIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000040a1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x40A1 28784 bytes
SHA-256: 9620948017a46c9e073f94f89b904c0e58eaa21167c04881bb48f2b6d31c962c
font_01_sfnt_off00007f57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F57 19192 bytes
SHA-256: 325af3990f2a58a8e294dde257b29789a79f474552cdbe3034512291563f1aaa

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