Malicious PDF — malware analysis report

Static analysis result for SHA-256 e45308634cc4f3a1…

MALICIOUS

PDF

35.2 KB Created: 2020-08-17 17:22:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 86f5b82609f206f2459601e56e7a1e30 SHA-1: a183b922b04ed25c662040d34f3da4ab61878689 SHA-256: e45308634cc4f3a1ddebacfedeb3474dcad4f4d65dc0b1513e5c708b50fa5243
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=biw+fixture+design+interview+questions+pdf'. This indicates the document's primary purpose is to redirect users to potentially harmful sites. Additionally, a PDF link farm heuristic was triggered, suggesting a broad distribution attempt. The document body, though heavily obfuscated, contains the same suspicious URL.

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=biw+fixture+design+interview+questions+pdf
    • http://files.balancedbodysolutionsok.com/uploads/1/3/0/7/130776602/raniv.pdf
    • https://cdn.shopify.com/s/files/1/0432/1856/7335/files/45082456592.pdf
    • https://cdn.shopify.com/s/files/1/0430/8136/7712/files/bank_al_habib_internet_banking.pdf
    • https://cdn.shopify.com/s/files/1/0431/2439/2087/files/nom_035_riesgos_psicosociales.pdf
    • https://cdn.shopify.com/s/files/1/0436/0981/7251/files/emotional_intelligence_theory.pdf
    • https://cdn.shopify.com/s/files/1/0431/1485/6610/files/agreement_termination_letter_sample.pdf
    • https://cdn.shopify.com/s/files/1/0430/0813/1233/files/colorimetric_chemical_analytical_methods.pdf
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/86209098811.pdf
    • https://cdn.shopify.com/s/files/1/0437/1690/3080/files/walufi.pdf
    • https://cdn.shopify.com/s/files/1/0432/2358/0830/files/catholic_bible_timeline_chart.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_off000049a2.bin
87aac5d06374cb7c081712114b6aaeec8f281df9cdf457cc80f6244d960d4dc5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x49A2 5364 bytes
font_01_sfnt_off00005c08.bin
b01928d447b66396b571128e30e67e8d81d4e5a2cd1bafbf332ba7f0d7fdc7d3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C08 10648 bytes

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