Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ec035a1dd6f6cdd…

MALICIOUS

PDF

48.7 KB Created: 2020-08-25 04:42:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b03bfdc4dd0d06aefb01335e744b00ce SHA-1: fd07244faa8aa4991b6a8b663df7f5e9e9e4a883 SHA-256: 1ec035a1dd6f6cdd69e7dbebf8b1254d88cb34665d39d7c5bab788bff34d4fa4
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a large number of external PDF links, suggesting an SEO link farm or redirection attempt. The primary malicious URL identified is https://ttraff.ru/pify?keyword=video+from+website+application. While no scripts were extracted, the presence of numerous links and the ML classifier's high confidence indicate a malicious intent, likely to lure users to external, potentially harmful, content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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://ttraff.ru/pify?keyword=video+from+website+application
    • http://jivebegiz.airportelearning.com/uploads/1/3/2/8/132814007/damelasi-metoxemuloru-suxurizeb-tenapagewufum.pdf
    • https://cdn.shopify.com/s/files/1/0430/0950/7487/files/tixepobebexatifogozep.pdf
    • https://cdn.shopify.com/s/files/1/0434/5298/9605/files/to_detect_the_presence_of_adulterants_in_sugar.pdf
    • https://cdn.shopify.com/s/files/1/0450/6897/6291/files/esquizofrenia_paranoide_sintomas.pdf
    • https://cdn.shopify.com/s/files/1/0434/3123/1638/files/giteledolevusunun.pdf
    • https://cdn.shopify.com/s/files/1/0430/7727/1706/files/hp_pavilion_p6000.pdf
    • https://cdn.shopify.com/s/files/1/0431/6754/7546/files/binder_file.pdf
    • https://cdn.shopify.com/s/files/1/0434/8402/0898/files/nududuperubepoxevaxawowo.pdf
    • https://cdn.shopify.com/s/files/1/0437/2329/2822/files/mean_value_theorem_examples_and_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0430/3978/5111/files/online_recruitment_system_project_report.pdf
    • https://cdn.shopify.com/s/files/1/0430/4027/6642/files/silusedopumuvoxigodaj.pdf
    • https://cdn.shopify.com/s/files/1/0434/4233/9992/files/82318051200.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000801e.bin
747bb1a7fe403c5452b502d41e5ea6155d7e1798890fa332b2221272cdc55065		 pdf-font-stream PDF embedded font (sfnt) at offset 0x801E 5496 bytes
font_01_sfnt_off000092c0.bin
22be1997a66d1adcf8792e025abb3a2901569e74cb10fdc8dbad8fe280d27e63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x92C0 10264 bytes

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