Malicious PDF — malware analysis report

Static analysis result for SHA-256 28578d955541ae95…

MALICIOUS

PDF

34.3 KB Created: 2021-07-03 21:03:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 6d8c8882b344fb8814deba2d6509c704 SHA-1: 3553c2ba0fb6923a99fcac95fe5de4b417e1a9dd SHA-256: 28578d955541ae9565f6e6c60a6b7b7edfaa4ada5c35a4d6d11c6092593b6abe
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/479516143/minecraft-java-edition-code-free-game-hack PDF link annotation
    • http://atiltd.com.tw/upload/files/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/how-to-get-free-robux-easy-on-phone_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/bux-life-free-robux_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/free-robux-codes-2021-not-expired_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/free-tiktok-accounts-with-followers_GM835599320.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/free-robux-giveaway-2021-dot-tk_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/roblox-1x1x1x1-hack_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/vermillion-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/real-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/minecraft-pe-texture-packs-free-download_GM479516143.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/how-to-get-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/how-to-cheat-on-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/roblox-report-hacker_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/roblox-free-animation-pack_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/hacks-roblox-yt_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_off000031a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31A3 22188 bytes
SHA-256: d3deaf8e17488556d24ba0a9245df56a80386913b15f379b9168d6bdd66c848c
font_01_sfnt_off000062bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62BF 18452 bytes
SHA-256: fb81680995477894643c941a28c0a6267adb45412d3f0a67d8ffcc83b29268cc

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