Malicious PDF — malware analysis report

Static analysis result for SHA-256 7439103f2bea1d1b…

MALICIOUS

PDF

46.1 KB Created: 2021-06-11 08:19:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0d09b417ec301f2f0f2d886cb3620d1c SHA-1: 738c611813ad4eadc1975d55f0fde63c5f687305 SHA-256: 7439103f2bea1d1baf0d223793c099064d0f627d4120c229c3e4d3f636c580d7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, masquerading as game hacks or free item generators. The heuristic firings indicate a lure for game hacks and a malicious redirector. The embedded URLs suggest a phishing attempt to trick users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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 https://netcdn.tw/app/431946152/roblox-all-free-items-2021-game-hack In PDF document text
    • http://www.vista-design.hr/files/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • https://www.vista-design.hr/files/roblox-exploit-download_GM431946152.pdfIn PDF document text
    • https://www.vista-design.hr/files/minecraft-free-games-no-download_GM479516143.pdfIn PDF document text
    • http://www.vista-design.hr/files/coin-master-daily-free-spin-and-coin-link_GM406889139.pdfIn PDF document text
    • https://www.vista-design.hr/files/minecraft-pe-hacks-ios_GM479516143.pdfIn PDF document text
    • https://www.vista-design.hr/files/free-coin-master-glitches_GM406889139.pdfIn PDF document text
    • http://www.vista-design.hr/files/hack-coin-master-8-ball-pool_GM406889139.pdfIn PDF document text
    • https://www.vista-design.hr/files/is-minecraft-free-on-pc_GM479516143.pdfIn PDF document text
    • http://www.vista-design.hr/files/minecraft-bedrock-edition-download-pc-free_GM479516143.pdfIn PDF document text
    • http://www.vista-design.hr/files/get-free-robux-today_GM431946152.pdfIn PDF document text
    • https://www.vista-design.hr/files/robux-free-2021_GM431946152.pdfIn PDF document text
    • http://www.vista-design.hr/files/roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.vista-design.hr/files/no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.vista-design.hr/files/cm-free-spins_GM406889139.pdfIn PDF document text
    • https://www.vista-design.hr/files/how-can-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.vista-design.hr/files/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.vista-design.hr/files/how-to-get-minecraft-for-free-on-xbox_GM479516143.pdfIn PDF document text
    • http://www.vista-design.hr/files/how-to-play-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://www.vista-design.hr/files/download-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • https://www.vista-design.hr/files/how-many-villages-are-in-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 3

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_off00005066.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5066 28052 bytes
SHA-256: d9501966f62d698233c4433185c5f2737783ca321c95b43f87b64791c11a1997
font_01_sfnt_off0000903f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x903F 18716 bytes
SHA-256: fd39f61a7d83c27afe3e93444f4d6e81a8ae1aff6fb17fb7e3c629a1573e73aa

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