Malicious PDF — malware analysis report

Static analysis result for SHA-256 80b26954d45e7ce3…

MALICIOUS

PDF

42.9 KB Created: 2020-08-31 13:04:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b4b6b2bed2e8a912eeaf28d96458b6cf SHA-1: e5b0ec88330d0b5322b98a0cb01716c1fd1def71 SHA-256: 80b26954d45e7ce3dbef0b0d4a969d56d100720b9bcf558c7a56c8ed993565e2
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a redirector service. The primary malicious URL identified is https://ttraff.cc/wix?keyword=calculo+de+paneles+solares+pdf, which is flagged as a malicious redirector. This suggests a phishing or scam attempt designed to lead users to malicious content. No scripts were extracted, but the PDF structure and embedded links strongly indicate a malicious intent.

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.cc/wix?keyword=calculo+de+paneles+solares+pdf
    • https://cdn.shopify.com/s/files/1/0444/3983/0695/files/75176173816.pdf
    • https://cdn.shopify.com/s/files/1/0440/8085/7253/files/pobenudafuxavanuba.pdf
    • https://cdn.shopify.com/s/files/1/0429/8424/3351/files/stellaris_defense_platform_bug.pdf
    • https://cdn.shopify.com/s/files/1/0435/5253/8787/files/zabewonavirenu.pdf
    • https://cdn.shopify.com/s/files/1/0439/4965/4184/files/bridal_chorus_from_lohengrin.pdf
    • https://cdn.shopify.com/s/files/1/0465/8040/0295/files/mimavotozowadeba.pdf
    • https://static.usrfiles.com/ugd/ac72e0_10579b32f32d42c2bad7f730b05a99f2.pdf
    • https://static.usrfiles.com/ugd/d55797_49d57c062920409199247891579327aa.pdf
    • https://static.usrfiles.com/ugd/ca300b_3b407190caab48fbbeedce444ae6dbcb.pdf
    • https://static.usrfiles.com/ugd/909b15_3a10d59a47e24fefb6ea604fd0a6a97e.pdf
    • https://cdn.shopify.com/s/files/1/0431/6564/7002/files/noxip.pdf
    • https://cdn.shopify.com/s/files/1/0429/6831/8105/files/pefin.pdf
    • https://cdn.shopify.com/s/files/1/0430/9411/4465/files/associative_property_of_addition_worksheet.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_off0000672d.bin
bf48c709cf2c6fdc791088664c95edda5e01e60aff6e5ffc75b3c07098f32d89		 pdf-font-stream PDF embedded font (sfnt) at offset 0x672D 5052 bytes
font_01_sfnt_off00007865.bin
e6fb6766020ef5bcb12b3766265bae97d705b8245429d7e7290a0ca76c3614aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7865 11416 bytes

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