Malicious PDF — malware analysis report

Static analysis result for SHA-256 79fbdfb0f3e5c5fb…

MALICIOUS

PDF

51.7 KB Created: 2021-06-08 13:31:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 01b6850bb9154b56ca6c54c688e66e10 SHA-1: a99e1e41e5e3d1453831c29f261ddcb54a53004b SHA-256: 79fbdfb0f3e5c5fb5ea4421a98847fa9cdc2d62927d33a1a3011c4b956a7eba4
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1071.001 Web Protocols

The PDF document contains multiple links to redirectors and malicious infrastructure, masquerading as a game hack generator. The ML classifier and specific heuristics indicate a high likelihood of malicious intent, likely for credential phishing or malware delivery. The embedded URLs are designed to lure users to sites that impersonate brands, increasing the likelihood of successful phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9850

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.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.tw/app/431946152/hack-ghost-simulator-roblox-september-game-hack.
  • 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 https://netcdn.tw/app/431946152/hack-ghost-simulator-roblox-september-game-hack In PDF document text
    • https://ibelive.com.tw/image/data/files/how-to-get-free-robux-without-doing-anything-2021_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/free-coin-master-spins-and-coins-for-daily_GM406889139.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/freerobuxhack-us_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/roblox-free-rubox_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/static-moonactive-net-link_GM406889139.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/how-to-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/coin-mster-free_GM406889139.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/is-minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/download-coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/coin-master-shield-hack_GM406889139.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/free-bedrock-minecraft_GM479516143.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/how-to-get-free-robux-app_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/easy-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/pokemon-go-free-qr-codes-2021_GM1094591345.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/minecraft-xbox-free_GM479516143.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/minecraft-bedrock-edition-pc-download-free_GM479516143.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/free-robux-come_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 5

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
stream_004_off000052a9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52A9 37652 bytes
SHA-256: 67766baba7beb075907407f6d4650825eb7d13104f08146ed0de04e4a45d7c67
font_01_sfnt_off0000a570.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA570 19148 bytes
SHA-256: 967940da2bd02e443746355b66e97cc6f32dacfd7366129d7922b3094942652f

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