Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f3b74913a005c02…

MALICIOUS

PDF

35.1 KB Created: 2021-07-08 21:01:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b5c22d5de1230884f1fb293d918d1f9e SHA-1: cc1325c72f74c33c8b50711d357174dda9aee8ef SHA-256: 0f3b74913a005c026d9c73dc453b03234b1b9648dad6958df19b926661400496
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 malicious infrastructure, specifically promoting game hacks and cheats. The primary lure URL is http://netcdn.tw/app/479516143/minecraft-cheats-pc-2021-game-hack, which is flagged as a known malicious redirector. The document body and embedded links suggest a social engineering tactic to trick users into visiting these sites, likely leading to further malware downloads or scams.

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/479516143/minecraft-cheats-pc-2021-game-hack In PDF document text
    • https://www.dahu-villa.com.tw/upload/files/roblox-cheat-engine-download-2021_GM431946152.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/coin-master-free-spins-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/roblox-apocalypse-rising-hack_GM431946152.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/wahoogaming-co-free-robux_GM431946152.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/how-to-hack-someones-account-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/hacks-para-counter-blox-roblox_GM431946152.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/how-to-get-a-hacked-roblox-account_GM431946152.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/free-robux-generator-no-verification_GM431946152.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/roblox-city-free_GM431946152.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/how-to-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/coin-master-guide-to-free-spins-and-rewards_GM406889139.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/free-minecraft-maps_GM479516143.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/free-limiteds-roblox_GM431946152.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/roblox-adopt-me-hack_GM431946152.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/how-to-hack-filtering-ebabled-game-roblox_GM431946152.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/free-minecraft-bedrock-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/aircraze-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/google-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/how-to-hack-coin-master-game-without-root_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_off000034ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34AB 22488 bytes
SHA-256: 8e5900412b3b3a398bbc50b0e4fc614d39a668dc6b39cc5e07f54687878ab573
font_01_sfnt_off000065f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65F2 18576 bytes
SHA-256: 11b6374ea2dfac1da0f66ea94b046efa9738583723302d091b91c4548524e6a8