Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea6093ca1a7f9fd4…

MALICIOUS

PDF

31.8 KB Created: 2021-07-19 11:43:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: c429484d34b8717a08531c27eaee129c SHA-1: 6a43b67c25fecc1478a236c0cf2ba6c0fc9db594 SHA-256: ea6093ca1a7f9fd4e3d0c47cd09c3dc7799e22c27268dea7f9e836adb05e047b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to a known malicious infrastructure, specifically advertising a 'free generator / game hack' for Minecraft. The document body also contains a call-to-action phrase and a similar redirect URL, reinforcing the lure. No scripts were extracted, but the primary malicious behavior is the redirection to a potentially harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9469

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/479516143/minecraft-free-download-windows-game-hack In PDF document text
    • https://gzhi.govvrn.ru/uploads/ckfinder/userfiles/files/free-minecraft-mods_GM479516143.pdfIn PDF document text
    • https://gzhi.govvrn.ru/uploads/ckfinder/userfiles/files/roblox-script-hack_GM431946152.pdfIn PDF document text
    • https://gzhi.govvrn.ru/uploads/ckfinder/userfiles/files/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
    • https://gzhi.govvrn.ru/uploads/ckfinder/userfiles/files/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://gzhi.govvrn.ru/uploads/ckfinder/userfiles/files/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://gzhi.govvrn.ru/uploads/ckfinder/userfiles/files/minecraft-pocket-edition-free_GM479516143.pdfIn PDF document text
    • https://gzhi.govvrn.ru/uploads/ckfinder/userfiles/files/minecraft-ps4-free_GM479516143.pdfIn 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
font_00_sfnt_off00002982.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2982 21948 bytes
SHA-256: 35e727a332eb1384ab3db14e068c5e164d7e9c1f75776ceda271079d02eb1eea
font_01_sfnt_off000059db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59DB 18488 bytes
SHA-256: 01dcb0f2ff627f41b1d4924369c472c3c2df1c4c10fc263e12ce9879fd09d82b

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