Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3bf8890e8ae6647…

MALICIOUS

PDF

37.5 KB Created: 2021-05-21 13:50:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 2e082a4c847811484b47b44bf500eace SHA-1: 91d700ec9eb2e1c6a7dab7cd0443a040604fe586 SHA-256: e3bf8890e8ae6647a68af6ac2c7fa8c4e82b49eb906f87d12dd9046abb75cb0e
160 Risk Score

Malware Insights

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

The PDF document contains multiple links to known malicious redirectors, specifically advertising 'free generators' or 'game hacks' to lure victims. The ML classifier also flagged this PDF as malicious. The presence of these links suggests an attempt to redirect users to potentially malicious websites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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/free-mojang-account-with-minecraft-game-hack In PDF document text
    • https://www.acacss.com/images/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.acacss.com/images/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • https://www.acacss.com/images/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
    • https://www.acacss.com/images/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • https://www.acacss.com/images/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://www.freenom.comHeyIn PDF document text
    • https://www.youtIn 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_002_off000036f8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x36F8 24796 bytes
SHA-256: 8eed51f4babb12b7afe75c5a83b5fc900e0de77a2cb844220f730dc0fb4093fb
font_01_sfnt_off0000703b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x703B 18688 bytes
SHA-256: 60143c81e88e14cdfb7631f3b4f61d617c046054e7601d01d98adb150323207f

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