Malicious PDF — malware analysis report

Static analysis result for SHA-256 c87cf3a9e0c51bce…

MALICIOUS

PDF

35.4 KB Created: 2021-06-26 22:25:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 321071086a18647f97320a75008a5f41 SHA-1: aaf6fe37ae1aff6b768470ac7bc1ca3211ef5aea SHA-256: c87cf3a9e0c51bce1bb767f6947ee2ef0c2ae5daa2174f6c5ac65a3b11e6acea
160 Risk Score

Malware Insights

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

The PDF document contains lures related to game hacks and free in-game currency, directing users to a known malicious redirector. The document body text and heuristic firings indicate a social engineering tactic to trick users into visiting malicious sites. While no scripts were extracted, the presence of embedded URLs and the nature of the lures suggest an attempt to download further malicious content or redirect users to exploit kits.

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/como-romper-las-paredes-en-roblox-hack-2021-game-hack In PDF document text
    • https://e-learningmin19jkt.com/__statics/gudangsoal/files/can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://e-learningmin19jkt.com/__statics/gudangsoal/files/minecraft-java-edition-download-free_GM479516143.pdfIn PDF document text
    • https://e-learningmin19jkt.com/__statics/gudangsoal/files/free-robux-earn_GM431946152.pdfIn PDF document text
    • https://e-learningmin19jkt.com/__statics/gudangsoal/files/free-robux-exe_GM431946152.pdfIn PDF document text
    • https://e-learningmin19jkt.com/__statics/gudangsoal/files/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
    • https://e-learningmin19jkt.com/__statics/gudangsoal/files/how-to-get-free-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • https://e-learningmin19jkt.com/__statics/gudangsoal/files/robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://e-learningmin19jkt.com/__statics/gudangsoal/files/free-old-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://e-learningmin19jkt.com/__statics/gudangsoal/files/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • https://e-learningmin19jkt.com/__statics/gudangsoal/files/free-jeans-roblox_GM431946152.pdfIn PDF document text
    • https://e-learningmin19jkt.com/__statics/gudangsoal/files/free-robux-promo-codes-december-2021_GM431946152.pdfIn PDF document text
    • https://e-learningmin19jkt.com/__statics/gudangsoal/files/how-to-get-free-robux-in-a-game-no-password_GM431946152.pdfIn PDF document text
    • https://e-learningmin19jkt.com/__statics/gudangsoal/files/roblox-unban-account-hack_GM431946152.pdfIn PDF document text
    • https://e-learningmin19jkt.com/__statics/gudangsoal/files/how-to-hack-roblox-games_GM431946152.pdfIn PDF document text
    • https://e-learningmin19jkt.com/__statics/gudangsoal/files/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://e-learningmin19jkt.com/__statics/gudangsoal/files/coin-master-free-coins-and-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://e-learningmin19jkt.com/__statics/gudangsoal/files/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • https://e-learningmin19jkt.com/__statics/gudangsoal/files/roblox-ff-hack_GM431946152.pdfIn PDF document text
    • https://e-learningmin19jkt.com/__statics/gudangsoal/files/free-roblox-card_GM431946152.pdfIn PDF document text
    • https://e-learningmin19jkt.com/__statics/gudangsoal/files/download-hack-coin-master_GM406889139.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_off00003183.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3183 22176 bytes
SHA-256: 44ce71c91e1c6313e1fde1555518329a651577d70ab64a4a20bf87e48a8a3f2c
font_01_sfnt_off000062d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62D4 19820 bytes
SHA-256: 8fa0a04ad2db5e74d00d57a0a1692d57bbc96e748dbf730300ed04e378f4cd43

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