Malicious PDF — malware analysis report

Static analysis result for SHA-256 e700113be0bd0eaf…

MALICIOUS

PDF

41.2 KB Created: 2021-04-26 03:06:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 7bab6d9d258b6f7afd813ed315e8beb2 SHA-1: 2a056250a4073ce9d60eda1222b7e9e885e6a60d SHA-256: e700113be0bd0eaf6f12d1792f25c17984caf19474618e762f59a5410686932e
168 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to external websites, including one identified as a malicious redirector. The document body and heuristics indicate a lure related to 'Roblox Free Robux' and game hacks, designed to entice users to click on these links. The presence of embedded URLs and the ML classifier's high confidence score support this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

Heuristics 5

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/roblox-free-robux-download-pc-game-hack In PDF document text
    • https://distribuidorademoveis.com.br/ckfinder/userfiles/files/roblox-cheat-engine-money.pdfIn PDF document text
    • https://distribuidorademoveis.com.br/ckfinder/userfiles/files/roblox-admin-hack-adopt-and-raise-a-cute-kid-download.pdfIn PDF document text
    • https://distribuidorademoveis.com.br/ckfinder/userfiles/files/free-10k-robux.pdfIn PDF document text
    • https://distribuidorademoveis.com.br/ckfinder/userfiles/files/roblox-dowlowd-for-free.pdfIn PDF document text
    • https://distribuidorademoveis.com.br/ckfinder/userfiles/files/roblox-gift-card-generator-free.pdfIn PDF document text
    • https://distribuidorademoveis.com.br/ckfinder/userfiles/files/roblox-bee-swarm-simulator-script-hack.pdfIn PDF document text
    • https://distribuidorademoveis.com.br/ckfinder/userfiles/files/how-to-get-free-godly-roblox-exploit.pdfIn PDF document text
    • https://distribuidorademoveis.com.br/ckfinder/userfiles/files/17-free-knife-codes-on-roblox-murder-mystery.pdfIn PDF document text
    • https://distribuidorademoveis.com.br/ckfinder/userfiles/files/robux-hack-android-2021.pdfIn PDF document text
    • https://distribuidorademoveis.com.br/ckfinder/userfiles/files/robux-cheats-com.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 2

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_off00004324.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4324 25212 bytes
SHA-256: cc3b2f402efdaa12aa7ff5dde65851d1b4985bba1ef467c32389445b0747d005
font_01_sfnt_off00007d41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D41 18976 bytes
SHA-256: 9b0293bd8510431d1c5d8d90eac2ceb2c6f536116ef29008d463c1f91a7311e8

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