Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc3429e453e8c21e…

MALICIOUS

PDF

33.4 KB Created: 2021-07-05 07:44:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 7ecd52c72e1ec77be73efcfbb26d7a39 SHA-1: ab002a9bf1862b59a7486a2f38d45e28a1f63141 SHA-256: fc3429e453e8c21ea80036ea61d4fad793b40bafd23bba713641c699207f6553
168 Risk Score

Malware Insights

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

The PDF document contains multiple links to a known malicious redirector infrastructure, specifically http://netcdn.tw/app/479516143/minecraft-free-apk-game-hack. The document body and heuristics indicate a lure for free game hacks or currency, suggesting the redirector leads to further malicious content or phishing pages. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/479516143/minecraft-free-apk-game-hack In PDF document text
    • https://tanahlot.id/assets/CKImages/files/free-minecraft-website_GM479516143.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/free-spins-in-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/pokemon-go-free-candy_GM1094591345.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/web-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/minecraft-games-free-download_GM479516143.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/roblox-how-to-cheat-on-obstacle-paradise_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/funbloxxyz-free-robux_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/girl-roblox-avatar_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/coin-master-links-for-today_GM406889139.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/coin-master-time-speed-hack_GM406889139.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/draw-free-roblox_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/coin-master-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/free-robux-no-info-needed_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/minecraft-linux-free_GM479516143.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/how-to-get-your-hacked-acc-back-roblox_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/coin-master-spins-gratis_GM406889139.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_off00002fff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FFF 21892 bytes
SHA-256: 4b47df1c88ecc53e74816479af409fdba705a11cae1f0caa88c5c70f770cd7f6
font_01_sfnt_off00006035.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6035 18204 bytes
SHA-256: df1e656c8f83adbffe018ceec80089e30cbc9ee1f65ea69fcf3a46ef834d3d44

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