Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e99e479df24e789…

MALICIOUS

PDF

35.6 KB Created: 2021-06-29 14:20:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 83d3bf3ddaa196185ccbfb6ebe9e8409 SHA-1: d91c03e7b862064488e9780bc4837ac6cba0b25d SHA-256: 2e99e479df24e789596de5997ec605024692195fad93ffbb7e1b46627da83d9b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of free game hacks and currency to trick users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, which in turn serves further malicious PDF files. The document's content and embedded URLs strongly suggest a phishing or scamming operation designed to lead users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.co/app/431946152/roblox-meepcity-free-plus-game-hack In PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/roblox-redeem_GM431946152.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/wurst_GM479516143.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/minecraft-pe-hack-client_GM479516143.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/how-to-get-free-minecraft-alts_GM479516143.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/800-robux-for-free-gamekit_GM431946152.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/cheat-roblox-jailbreak-speed-2021_GM431946152.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/free-robux-no-downloads-or-human-verafcation_GM431946152.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/free-tiktok-followers-and-likes_GM835599320.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/60-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/blox-fish-free-robux_GM431946152.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/coin-master-link_GM406889139.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/free-robux-come_GM431946152.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/free-robux-trade-free-robux_GM431946152.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/roblox-how-to-get-in-bloxburg-for-free_GM431946152.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/free-minecraft-account-reddit_GM479516143.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/roblox-piano-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/how-to-hack-and-get-free-robux_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_off00003185.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3185 22700 bytes
SHA-256: bb99e74b7f14f51f93d0da2dae18541654965ec17f2b9ba8ea3108f1a096a374
font_01_sfnt_off00006436.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6436 19720 bytes
SHA-256: 1ad7f384a120027d0e50d4bb54822a823a9a6b76f32a0cd0befea53efecd3a1a

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