Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e75a682c2a6b3fd…

MALICIOUS

PDF

45.7 KB Created: 2021-06-03 22:01:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 69974d4bd4de84de83bb0281e4308972 SHA-1: b19e7d51a5dc70a4d2d4869444cfd3bb570c36ad SHA-256: 2e75a682c2a6b3fd17544118784bf82ba4d63b90015b529b59af709be6c57860
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

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 0.9797

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.online/app/406889139/get-free-food-in-coin-master-game-hack PDF link annotation
    • http://www.js100.com/uploads/ckeditor/files/coin-master-daily-free-spins-link-march-2021_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/roblox-rewards-robux_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/how-to-get-tiktok-famous-free_GM835599320.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/robux-hack-tools_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/i-got-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/minecraft-hacks-pc_GM479516143.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/tiktok-par-free-followers-kaise-badhaye_GM835599320.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/minecraft-hack-download_GM479516143.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/pokemon-go-free-or-gotcha_GM1094591345.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/adopt-me-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/cm-spins_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/free-spins-coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/earn-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/free-outfits-roblox_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/free-minecraft-worlds_GM479516143.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/coin-master-free-spin-and-trading_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004e4f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E4F 25184 bytes
SHA-256: 37b3908a3705049a2a0e4831a2b5fa6ea3d71684ad98ab36dc5e7b15a0bfad4a
font_01_sfnt_off00008770.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8770 2820 bytes
SHA-256: 96a70491b0783ad8c6fc9b11a18f021aa22c69ac41ee4499b781d16a1b99b689
font_02_sfnt_off00009111.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9111 17884 bytes
SHA-256: 9e8203a117569d62088e0d60748e14aeb3e41c3201478a2ae4f054b44a03d8f3

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