Malicious PDF — malware analysis report

Static analysis result for SHA-256 73a5a91382a9b5c9…

MALICIOUS

PDF

35.0 KB Created: 2021-07-05 07:40:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: b793d43180d4be505f4c2032737ac1d5 SHA-1: 6516710182161a35b3c75150f8276e2dc93b65d8 SHA-256: 73a5a91382a9b5c9144da5fbbc61b3763195cfd80bbd49da6d05a0826c3797b2
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/games-that-give-free-robux-game-hack PDF link annotation
    • https://library.uigm.ac.id/repository/free-robux-without-human-verification-or-downloads_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-free-items_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/instalar-hack-btools-roblox_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/my-account-got-hacked-what-do-i-do-roblox_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/robux-free-dowload-generator-torrent_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/roblox-cheat-god-mode_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-robux-legit_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/minecraft-ps4-code-free_GM479516143.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/cant-hacking-to-pokes-acount-in-roblox_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/when-nerd-sees-free-robux_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/working-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-robux-co_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/wie-kann-mann-hacken-in-roblox_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-robux-script-pastebin-10-29-2021_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-vip-roblox_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/taste3-com-roblox-online-hack_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-minecraft-website_GM479516143.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/roblox-walk-through-walls-hack-2021_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002fb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FB2 22716 bytes
SHA-256: 97d1b44c98a2c52fc7669cf41d5c2ecfa2671fb91946fb18b50d530415fb899d
font_01_sfnt_off0000629f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x629F 19480 bytes
SHA-256: a134365561edbdff80a1502dd404e307ea3328ecb7bf3d1da0fbfee9abe6ee6f

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