Malicious PDF — malware analysis report

Static analysis result for SHA-256 563420943cb6f7a5…

MALICIOUS

PDF

66.3 KB Created: 2020-12-14 19:31:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a9b6438c56a93c967d623dbae7d410f9 SHA-1: 6581fa1ee57da9cb630462318dc5b9fa17815d92 SHA-256: 563420943cb6f7a5e9aefd40c8fbf830f20b6e56e49c967176fd467a08789652
212 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file contains numerous links to external websites, many of which are flagged as malicious redirectors or part of a link farm. The document body, though heavily obfuscated, appears to contain keywords related to financial trading, suggesting a lure to entice users to click on these malicious links. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent, likely for phishing or distributing further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7722

Heuristics 4

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://ggtraff.ru/strik?utm_term=robinhood+penny+stocks+to+buy+today
    • https://lanoxujuzon.weebly.com/uploads/1/3/4/6/134630121/20799dd7a2e73f.pdf
    • https://bojifigo.weebly.com/uploads/1/3/4/8/134847606/2096927.pdf
    • https://debexubomes.weebly.com/uploads/1/3/4/8/134881130/5397429.pdf
    • https://cdn-cms.f-static.net/uploads/4470975/normal_5faf3e50cec45.pdf
    • https://cdn-cms.f-static.net/uploads/4370068/normal_5fba4fa33bf62.pdf
    • https://rokufekajo.weebly.com/uploads/1/3/0/8/130814342/vixelob.pdf
    • https://cdn-cms.f-static.net/uploads/4365634/normal_5f873398a8578.pdf
    • https://static.s123-cdn-static.com/uploads/4472783/normal_5fc673e4c4efb.pdf
    • https://jajijonag.weebly.com/uploads/1/3/4/7/134762104/bubawapavim.pdf
    • https://cdn-cms.f-static.net/uploads/4387819/normal_5fbe1bfd92447.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static1.squarespace.com/static/5fc172dc1452f90b7fe9340e/t/5fc5a039a97599144ebb1689/1606787130831/merchant_mariner_credential.pdf
    • https://uploads.strikinglycdn.com/files/0eb6a3fe-b2b2-4980-892e-20c2467fe250/16158118055.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d309.bin
3ca3a9c24278b5210c6d202c7148840a0ef5f32abd6ec1f169a754d0f3323dc5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD309 5228 bytes
font_01_sfnt_off0000e4c3.bin
1e1747b7875424b81a4d854577ae74931fcce8ec296395bc0f9431fd8d460cff		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE4C3 11448 bytes

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