Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5f7834d410efd44…

MALICIOUS

PDF

34.3 KB Created: 2021-06-29 03:28:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 528a85069b8ca9f7a38c8e9e720772ee SHA-1: 1e573db1a6c29cc3c777efad3adbe4091b822053 SHA-256: b5f7834d410efd44b5981298d81a6cd431031862030613f59d5bf5ae07b21539
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generators' and 'game hacks' for popular games. The primary redirector URL is http://netcdn.co/app/431946152/unpatchable-new-roblox-exploit-hack-skyline-stat-change-game-hack. This indicates a social engineering lure designed to trick users into visiting a potentially harmful site, likely for credential harvesting or malware distribution.

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.co/app/431946152/unpatchable-new-roblox-exploit-hack-skyline-stat-change-game-hack In PDF document text
    • http://www.ma-plast.hr/files/roblox-anti-speed-hack_GM431946152.pdfIn PDF document text
    • http://www.ma-plast.hr/files/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.ma-plast.hr/files/roblox-rc7-free-download_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/roblox-games-com-free_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/free-roblox-redeem-codes-2021_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/how-to-get-free-robux-on-computer_GM431946152.pdfIn PDF document text
    • http://www.ma-plast.hr/files/robux-download_GM431946152.pdfIn PDF document text
    • http://www.ma-plast.hr/files/hacks-game-in-roblox-prison-life-download_GM431946152.pdfIn PDF document text
    • http://www.ma-plast.hr/files/free-robux-on-android-tablet_GM431946152.pdfIn PDF document text
    • http://www.ma-plast.hr/files/hack-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • http://www.ma-plast.hr/files/coin-master-hack-quora_GM406889139.pdfIn PDF document text
    • https://www.ma-plast.hr/files/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://www.ma-plast.hr/files/coin-master-free-pin_GM406889139.pdfIn PDF document text
    • http://www.ma-plast.hr/files/hacks-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • https://www.ma-plast.hr/files/free-minecraft-capes_GM479516143.pdfIn PDF document text
    • http://www.ma-plast.hr/files/how-to-hack-your-rank-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/download-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://www.ma-plast.hr/files/roblox-svg-free_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/how-to-sex-hack-on-roblox_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002d95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D95 22284 bytes
SHA-256: 870120a855aba8af43c85737f5dac5c67f9207563f6bbc499d1650bd221867af
font_01_sfnt_off00005f43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F43 19568 bytes
SHA-256: 68699b0fd2a3835027cae37a9f7d6ba1c66e9a21103eae1c180416003c923316

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