Malicious PDF — malware analysis report

Static analysis result for SHA-256 574eaf62854fd9eb…

MALICIOUS

PDF

36.0 KB Created: 2021-06-26 22:42:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 58c04bd9b5e4a53c3097f17097215fb5 SHA-1: 080c5642f0cab22927c1db17ee0873aa9cb6a8af SHA-256: 574eaf62854fd9ebbdb148048585f8509596e6dd2dfca3dd986b40d16bcd7259
160 Risk Score

Malware Insights

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

The PDF document contains multiple links that redirect to a known malicious infrastructure, specifically advertising free game hacks and generators. The presence of these links, combined with the ML classifier flagging the document as malicious, strongly suggests a phishing or social engineering attempt to lure users to potentially harmful websites. No scripts were extracted, but the document's structure and embedded URLs indicate a malicious intent to redirect users.

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.co/app/431946152/free-admin-commands-roblox-jailbreak-game-hack In PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-root-hack_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-free-spins-link-2021-april_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-hack-apk-download-2021_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-magical-chest-coin-master_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/roblox-studio-free_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-gifts_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/mobi-hack-robux-hack_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/how-to-make-a-minecraft-pe-server-for-free_GM479516143.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/robux-free-2021_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/roblox-hack-any-game_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/how-do-i-get-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/how-to-get-free-robux-website_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-hack-spin-generator_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-rewards-free-spins_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/minecraft-for-chromebook-free_GM479516143.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_off00003570.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3570 22132 bytes
SHA-256: 69b7a574b212ab8b54dcd11d67fb09d57400964aef4c9f33f8b9781bf36ecf7c
font_01_sfnt_off00006653.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6653 19540 bytes
SHA-256: bc7a6d1c5508404f25132c32be414b5cbea705239153933516646405a685a69d

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