Malicious PDF — malware analysis report

Static analysis result for SHA-256 c74409e6b0899e5a…

MALICIOUS

PDF

33.7 KB Created: 2021-07-04 22:49:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: dc7b226d2cc1cb0a279124d170079681 SHA-1: abc584fe8dfcbcfd00fe830b787da6de71eb4354 SHA-256: c74409e6b0899e5ab74368d9561fb548863bc81501e9faf4908de3e1c1697c5e
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 0.9980

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 http://netcdn.tw/app/431946152/get-roebucks-com-game-hack PDF link annotation
    • https://opac.heritagejkt.org/repository/tiktok-followers-for-free_GM835599320.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/coin-master-free-spins-twitter_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/roblox-games-download-free-pc_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/coin-master-download_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/distork-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/addrbx-earn-free-robux-by-doing-tasks_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/roblox-studio-free-download_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/krnl-download_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/how-to-get-more-robux-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/coin-master-free-spins-and-coins-hack_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/roblox-no-download-hack_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/youtube-roblox-working-hack-tool_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/free-roblox-bots_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/coin-master-coins-free_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/natural-disaster-survival-roblox-cheats_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/how-to-use-cheat-engine-on-roblox-without-getting-kicked_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/veorra-set-free-roblox-id_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/free-promo-codes-for-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/coin-master-free-spins-and-coins-blogspot_GM406889139.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_off00002ebc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EBC 21960 bytes
SHA-256: 3639c67f752a487599eb28d4a49c206a435224a7cf2e0fbb5048c2bce3eced72
font_01_sfnt_off00005f36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F36 18876 bytes
SHA-256: 3a618fb712185c77c08f57f640f429335c1742aa50035aba4f88ce6740563d77

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