Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e2adb5d4bcb1c95…

MALICIOUS

PDF

34.2 KB Created: 2021-07-01 13:45:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 4429092e85a15bc2cc7aaec26e0f0a0e SHA-1: 77f44d29f25f63b94644f7cdc01656a16b698c33 SHA-256: 6e2adb5d4bcb1c95080ea579f342fa9e7b4a9c8a63029df4dd689662ba79c3e2
180 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game hacks and currency to trick users into clicking malicious links. The document contains multiple embedded URLs, including one pointing to a known malicious redirector and others hosted on an IP address that serves numerous similar lure PDFs. The ML classifier strongly indicated maliciousness, and the heuristics confirm the use of redirection and IP-based hosting for malicious content.

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.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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/free-godzilla-roblox-game-hack In PDF document text
    • http://111.68.26.74/widyapustaka/repository/get-me-robux_GM431946152.pdfPDF link annotation
    • http://111.68.26.74/widyapustaka/repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/roblox-pet-simulator-noob-vs-pro-vs-hacker_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/cheat-roblox-ios_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/free-robux-no-verification-at-all_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/roblox-t-shirt-adidas-free_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/free-roblox-work-at-a-pizza-place_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/new-roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/how-to-hack-roblox-mining-simulator_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/hspart-imahsimp-yhsbatch1p-pastebin-free-robuxtype-batch1q20212021shq_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/roblox-cheat-mods_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/how-to-do-reach-hacks-on-roblox-swordfighting_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/free-aesthetic-stuff-on-roblox_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/minecraft-windows-10-hacked-client_GM479516143.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/free-robux-app_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/citizen-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/get-free-robux-now_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_off00003091.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3091 21852 bytes
SHA-256: 34d1acab7bfd723604c788d5eec2fb800e2a3a74d86f5c6a78b2a0e09b69fdfb
font_01_sfnt_off000060ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60CA 19024 bytes
SHA-256: bc9492ad3b73df3538ea305f3b0381d53a34a71a5a26f6811b5532b68629d1e5

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