Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8ce1e8ece2f3070…

MALICIOUS

PDF

37.3 KB Created: 2021-07-03 16:52:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: b4bc762484c4ff087f36f23bb3a7196c SHA-1: eaf6078b272255b5b1ece41ab453ccbeb1461d13 SHA-256: c8ce1e8ece2f307072f831744e78e726c8b4a5a4f7eeed1573604701d82f9f38
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links designed to lure users into clicking on what appear to be game hacks or generators. The primary link directs to a known malicious redirector infrastructure, likely serving as a gateway to further malicious content or downloads. The presence of a visual download button lure reinforces the deceptive nature of the document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/406889139/coin-master-hack-without-verification-site-zyngaplayerforumscom-game-hack In PDF document text
    • http://katalog.ireyogya.org/repository/roblox-hacks-hub_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-free-spins-and-free-coins_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-get-your-acc-back-on-roblox-with-hacking_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/robux-hack_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/can-you-still-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-attacks-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/roblox-free-robux-codes-2021-wiki_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/roblox-cheat-engine-wall-hack_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/hacker-tycoon-roblox-games_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/check-cashed-v5-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/roblox-god-mode-hack-pastebin_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/robux-hack-2021-pastebin_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/robux-fre-codes_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/tiktok-free-views-website_GM835599320.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-hack-rich-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/hack-tool-for-any-game-on-roblox_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-free-spins-link-without-human-verification_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/cheat-roblox-dragon-ball-rage_GM431946152.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
font_00_sfnt_off00003858.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3858 23012 bytes
SHA-256: 657adf75a4e3d7985a86ace3ee583e4f9d8558f82757dcebc73960a3b9f002b4
font_01_sfnt_off00006bf2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BF2 19428 bytes
SHA-256: fc236007e3560f26c3fe5b7a692e8112a1c9bbf9d85cb94b29ac9a513f83f562

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