Malicious PDF — malware analysis report

Static analysis result for SHA-256 442e669346119b38…

MALICIOUS

PDF

24.5 KB Created: 2021-06-27 02:12:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 4d5c5b42eeafded36ff508463d9948ab SHA-1: c9fcbad8797f667de3c77e9c7f69865f33805bc3 SHA-256: 442e669346119b38e33f8c15bb93298a65c825a4a15719f845f356cd7f6fe5ed
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of game hacks and free currency to trick users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, likely serving as a gateway to further malicious content or exploits. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect users to potentially harmful websites, aligning with common phishing and scam tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 3

  • 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.
  • 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/buy-free-clofing-on-roblox-computer-game-hack In PDF document text
    • http://ycstamping.com.tw/image/data/files/coin-master-online-hack-generator_GM406889139.pdfIn PDF document text
    • http://ycstamping.com.tw/image/data/files/roblox-adventure-story-wraith-card-hack_GM431946152.pdfIn PDF document text
    • http://ycstamping.com.tw/image/data/files/master-coin-free-spin_GM406889139.pdfIn PDF document text
    • http://ycstamping.com.tw/image/data/files/how-to-hack-deathrun-2-on-roblox_GM431946152.pdfIn PDF document text
    • http://ycstamping.com.tw/image/data/files/free-robux-pastebin-fast_GM431946152.pdfIn PDF document text
    • http://ycstamping.com.tw/image/data/files/2021-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://ycstamping.com.tw/image/data/files/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://ycstamping.com.tw/image/data/files/blogger-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://ycstamping.com.tw/image/data/files/oginject-co_GM406889139.pdfIn PDF document text
    • http://ycstamping.com.tw/image/data/files/how-to-get-free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://ycstamping.com.tw/image/data/files/7-year-old-roblox_GM431946152.pdfIn PDF document text
    • http://ycstamping.com.tw/image/data/files/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • http://ycstamping.com.tw/image/data/files/i-want-robux_GM431946152.pdfIn PDF document text
    • http://ycstamping.com.tw/image/data/files/coin-master-hack-club_GM406889139.pdfIn PDF document text
    • http://ycstamping.com.tw/image/data/files/minecraft-app-store-free_GM479516143.pdfIn PDF document text
    • http://ycstamping.com.tw/image/data/files/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://ycstamping.com.tw/image/data/files/coin-master-hack-tips_GM406889139.pdfIn PDF document text
    • http://ycstamping.com.tw/image/data/files/where-to-get-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://ycstamping.com.tw/image/data/files/roblox-2021-hack_GM431946152.pdfIn PDF document text
    • http://ycstamping.com.tw/image/data/files/claim-free-robux-button_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000306e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x306E 22380 bytes
SHA-256: 616748bef78907687be955e665251e8cd726a1468695b8c58684200ebec17b78

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