Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b734055263573a9…

MALICIOUS

PDF

34.0 KB Created: 2021-07-09 18:56:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: fe36890503fa7008751869157bbc798c SHA-1: c89e3fc4d293e872481e55aa5c7bc4957bdbd69d SHA-256: 5b734055263573a928c2365d304068f9bda77affc79dd95e696d115add10f5ef
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one to a known malicious redirector at http://netcdn.tw/app/406889139/daily-coin-master-free-link-game-hack. This redirector is part of a lure to trick users into believing they can get free game hacks or generators. The presence of a visual download button further supports the deceptive nature of the document. No scripts were extracted, but the primary attack vector appears to be social engineering via deceptive links.

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/406889139/daily-coin-master-free-link-game-hack In PDF document text
    • https://www.dahu-villa.com.tw/upload/files/coin-master-daily-link_GM406889139.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/calliu-hack-roblox_GM431946152.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/free-roblox-game-card_GM431946152.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/free-executors-for-roblox_GM431946152.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/how-to-hack-someones-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/2021-coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/get-free-food-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/how-to-get-free-robux-without-offers_GM431946152.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/minecraft-hack-app_GM479516143.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/easy-way-to-get-robux_GM431946152.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/free-roblox-pokemon-go_GM431946152.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/how-to-retrieve-a-hacked-roblox-account_GM431946152.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/fly-hack-roblox-lumber-tycoon-2-francais_GM431946152.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/roblox-avatar-free_GM431946152.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/how-to-get-a-cape-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/coin-hackhub-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002ede.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EDE 22536 bytes
SHA-256: b040e8bbcc3d6878795c01342c8b0e84ff796c26377c6725a47e07773f5ce89c
font_01_sfnt_off00006166.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6166 18588 bytes
SHA-256: a699d3a8433e877459e79dc352377539e242d0a0960a9e9ed42abaee04720ef7

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