Malicious PDF — malware analysis report

Static analysis result for SHA-256 3436a5d7f10c243e…

MALICIOUS

PDF

48.9 KB Created: 2021-05-16 01:31:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 69eab0431e332cd457c17861a69cc59a SHA-1: 87d8c3bd3b986a28e93e341bb968e2004170820a SHA-256: 3436a5d7f10c243e1c6e66598f6dc150aed70833418460296b9f2822b037136b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

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 0.8642

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.xyz/app/431946152/games-to-get-free-robux-game-hack PDF link annotation
    • https://laconce.com/images/how-to-get-free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • https://laconce.com/images/coin-master-hacks-that-work_GM406889139.pdfIn PDF document text
    • https://laconce.com/images/coin-master-unlimited-coins-hack-apk-download_GM406889139.pdfIn PDF document text
    • https://laconce.com/images/free-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • https://laconce.com/images/roblox-robux_GM431946152.pdfIn PDF document text
    • https://laconce.com/images/what-is-a-minecraft-client_GM479516143.pdfIn PDF document text
    • https://laconce.com/images/minecraft-wurst-client_GM479516143.pdfIn PDF document text
    • https://laconce.com/images/free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • https://laconce.com/images/minecraft-java-free-account_GM479516143.pdfIn PDF document text
    • https://laconce.com/images/minecraft-images-free_GM479516143.pdfIn PDF document text
    • https://laconce.com/images/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://laconce.com/images/cool-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://laconce.com/images/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • https://laconce.com/images/100-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://laconce.com/images/coin-master-daily-spin-free_GM406889139.pdfIn PDF document text
    • https://laconce.com/images/roblox-free-download_GM431946152.pdfIn PDF document text
    • https://laconce.com/images/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • https://laconce.com/images/toolbox-for-minecraft-ios_GM479516143.pdfIn PDF document text
    • https://laconce.com/images/free-robux-accounts_GM431946152.pdfIn PDF document text
    • https://laconce.com/images/how-to-hack-a-roblox-account-easy_GM431946152.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004644.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4644 25592 bytes
SHA-256: f5ee3f18ad359b8ca54626e4ec0dd66a22efd2e0255c98ed1091d69950b3045c
font_01_sfnt_off00008217.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8217 4004 bytes
SHA-256: e992f13876d99a830a3262fef0a8ce41bc6cdfe3580fd20d31495028a24b921b
font_02_sfnt_off00008f98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F98 3396 bytes
SHA-256: e59bc53cd4c0ee65dc1533becad2866f345dcb060e6c68bb8187d21cb9f973ee
font_03_sfnt_off00009b8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B8B 18608 bytes
SHA-256: 08e91301afb793f0c8f569168ad93911c90315771ef2b58170e32493949df7cc

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