Malicious PDF — malware analysis report

Static analysis result for SHA-256 e743ec8b46add96b…

MALICIOUS

PDF

43.9 KB Created: 2021-05-16 03:10:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 04d8fd7520715d1e24fa5f97fa586740 SHA-1: d6591f3e9a14fbc3cbffa7f62091401d2d3d0a9f SHA-256: e743ec8b46add96bb394c870edc20270d54c7c3b5d85e149a52804bd4de6a8fb
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically disguised as 'game hacks' and 'free generators'. The document body, though partially obfuscated, contains text related to earning Robux and mentions the authoring application, suggesting a lure for potentially unwanted or malicious content. The presence of multiple redirector links indicates a strong intent to lead the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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.xyz/app/431946152/earn-robux-now-game-hack In PDF document text
    • https://info-zentr.ru:443/images/minecraft-linux-free_GM479516143.pdfIn PDF document text
    • https://info-zentr.ru:443/images/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • https://info-zentr.ru:443/images/coin-master-hack-tool-generator_GM406889139.pdfIn PDF document text
    • https://info-zentr.ru:443/images/coin-master-hack-online-2021_GM406889139.pdfIn PDF document text
    • https://info-zentr.ru:443/images/minecraft-pocket-edition-free_GM479516143.pdfIn PDF document text
    • https://info-zentr.ru:443/images/free-robux-come_GM431946152.pdfIn PDF document text
    • https://info-zentr.ru:443/images/roblox-toy-codes-free_GM431946152.pdfIn PDF document text
    • https://info-zentr.ru:443/images/robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://info-zentr.ru:443/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://info-zentr.ru:443/images/free-robux-com-no-verification_GM431946152.pdfIn PDF document text
    • https://info-zentr.ru:443/images/free-minecraft-games-for-kids_GM479516143.pdfIn PDF document text
    • https://info-zentr.ru:443/images/best-way-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://info-zentr.ru:443/images/free-roblox-clothes-codes_GM431946152.pdfIn PDF document text
    • https://info-zentr.ru:443/images/how-to-get-free-robux-on-computer_GM431946152.pdfIn PDF document text
    • https://info-zentr.ru:443/images/hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • https://info-zentr.ru:443/images/coin-master-instagram-free-spins_GM406889139.pdfIn PDF document text
    • https://info-zentr.ru:443/images/minecraft-free-download-mac-full-version-2021_GM479516143.pdfIn PDF document text
    • https://info-zentr.ru:443/images/free-robux-gen_GM431946152.pdfIn PDF document text
    • https://info-zentr.ru:443/images/how-to-get-free-faces-on-roblox_GM431946152.pdfIn PDF document text
    • https://info-zentr.ru:443/images/how-to-get-free-robux-without-downloading-apps-2021_GM431946152.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000048c4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48C4 23924 bytes
SHA-256: 36fa9e5192e2ab212b90c520ce941e8cd3f21f0d8a53d2b01d28b77850faf6be
font_01_sfnt_off00007f63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F63 2820 bytes
SHA-256: d88f25cfe237a714f996150a11dd8a058f0f7c3e9d1ae91c17b46c10409b6c0b
font_02_sfnt_off000088fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88FE 18244 bytes
SHA-256: c4f4d96dd4ae320374aba47736520dcd557f712ab2f623cefa09a16c6934ef42

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