Malicious PDF — malware analysis report

Static analysis result for SHA-256 1568c6b99adfa724…

MALICIOUS

PDF

34.7 KB Created: 2021-07-07 05:03:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 220a01d8769bbb6450bafc66c8c08e27 SHA-1: 5725cd932fd9fe0824caf434e5f993e4d56259e3 SHA-256: 1568c6b99adfa724a1d7931ef8c79dd520e69a47f2eaff3527f9a5fb51838538
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links to known malicious redirectors, specifically promoting 'game hacks' and 'free generators' for games like Roblox. The ML classifier strongly flagged this PDF as malicious. The presence of a visual download button lure further supports the malicious intent to trick users into navigating to these harmful URLs, likely leading to further malware downloads or phishing attempts.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/roblox-hack-app-game-hack In PDF document text
    • http://rightlead.com.tw/image/data/files/free-roblox-accounts-google_GM431946152.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/robux-free-com_GM431946152.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/hack-with-script-roblox_GM431946152.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/oprewards-com-robux_GM431946152.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/como-hackear-un-juego-de-roblox_GM431946152.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/free-robux-videos_GM431946152.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/50-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/is-coin-master-hacks-safe_GM406889139.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/how-to-get-free-robux-one-step_GM431946152.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/how-to-get-free-robux-on-the-phone_GM431946152.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/roblox-hack-commands-and-lua-c_GM431946152.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/what-is-coin-master_GM406889139.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/hackear-coin-master_GM406889139.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/free-coin-app_GM406889139.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/minecraft-multiplayer-free_GM479516143.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/vehicle-simulator-roblox-speed-hack_GM431946152.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/free-robux-generator_GM431946152.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/how-to-hack-and-get-free-robux_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_off00003095.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3095 22588 bytes
SHA-256: c122f05abb80bc716d504530943bbb2fd5a9014a2bd9bc253b6860deeba8a698
font_01_sfnt_off00006329.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6329 18832 bytes
SHA-256: 306f83865665730cccb200b9769a14693e944a35f37b3076e40f03dcf922f572

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