Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1c3e545be533483…

MALICIOUS

PDF

41.9 KB Created: 2021-05-13 22:39:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: da1acdefcac1a438f0941aa959727dce SHA-1: bee5f7b62fc351afe8b3237548736cbb54541f24 SHA-256: e1c3e545be533483430799fbe73b16994ee8fb967162acfec3040fea6cbf3c5a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, disguised as 'game hacks' or 'free generators'. The document body and embedded links suggest a lure to trick users into downloading or visiting malicious sites. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly indicate a malicious redirector chain, likely for malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/479516143/minecraft-that-you-can-play-for-free-game-hack In PDF document text
    • https://omhelsjehart.nu/images/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • https://omhelsjehart.nu/images/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • https://omhelsjehart.nu/images/play-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • https://omhelsjehart.nu/images/get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://omhelsjehart.nu/images/minecraft-bedrock-hacks-windows-10_GM479516143.pdfIn PDF document text
    • https://omhelsjehart.nu/images/minecraft-free-no-download_GM479516143.pdfIn PDF document text
    • https://omhelsjehart.nu/images/minecraft-free-no-virus_GM479516143.pdfIn PDF document text
    • https://omhelsjehart.nu/images/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • https://omhelsjehart.nu/images/how-to-earn-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • https://omhelsjehart.nu/images/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://omhelsjehart.nu/images/free-2021-robux_GM431946152.pdfIn PDF document text
    • https://omhelsjehart.nu/images/cheats-coin-master-free-spins-and-news_GM406889139.pdfIn PDF document text
    • https://omhelsjehart.nu/images/wurst-client-18-9_GM479516143.pdfIn PDF document text
    • https://omhelsjehart.nu/images/generator-robux_GM431946152.pdfIn PDF document text
    • https://omhelsjehart.nu/images/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://omhelsjehart.nu/images/coin-master-hack-pc-cheat-engine_GM406889139.pdfIn PDF document text
    • https://omhelsjehart.nu/images/free-minecraft-account-and-password_GM479516143.pdfIn PDF document text
    • https://omhelsjehart.nu/images/roblox-free-no-download_GM431946152.pdfIn PDF document text
    • https://omhelsjehart.nu/images/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
    • https://omhelsjehart.nu/images/game-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://education.minecraftIn PDF document text
    • https://discord.ggIn 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
stream_003_off00004826.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4826 24676 bytes
SHA-256: 15d3e7a193ed27d3aa0af7c50bd69bf2eeff67e143c3127450cf0040d9cc1a0b
font_01_sfnt_off000080b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80B5 18588 bytes
SHA-256: c2b8d9ff41b5817f39fe12fa9914c2498059949854f0a019c9b111e2507a5aed

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