Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e366d272330cf6d…

MALICIOUS

PDF

44.2 KB Created: 2020-08-15 00:01:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5c6ddcb10dcd3b7600faaea218e67a9d SHA-1: ee4d1aa60dc1db9a7d49ebf6304a04a408379521 SHA-256: 4e366d272330cf6dfa0db270fc1e136078211ac047d08b3138345b8892989fe8
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file exhibits malicious behavior through a large number of embedded links, a technique often used for SEO manipulation or to distribute further malicious content. One of these links, 'https://ttraff.ru/pify?keyword=bridal+shower+sheet+cake+designs', is known to redirect to malicious infrastructure. The document body contains garbled text but also includes the same suspicious URL, reinforcing its role in the attack. No scripts were extracted, limiting the analysis of direct payload execution.

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=bridal+shower+sheet+cake+designs
    • http://files.hermosahistory.com/uploads/1/3/1/3/131398423/lepibas.pdf
    • http://files.marymackaystudio.co.uk/uploads/1/3/0/7/130775490/bivitakudosiduvepo.pdf
    • http://tewiliz.vietnamtourist.org/uploads/1/3/0/7/130738970/97725a.pdf
    • https://cdn.shopify.com/s/files/1/0433/7152/8344/files/answer_key_math_10_module_3.pdf
    • https://cdn.shopify.com/s/files/1/0431/0538/6657/files/39017737778.pdf
    • https://cdn.shopify.com/s/files/1/0431/5771/7143/files/mowenasemorinuv.pdf
    • https://cdn.shopify.com/s/files/1/0430/3886/7607/files/rbse_12th_biology_syllabus_2020.pdf
    • https://cdn.shopify.com/s/files/1/0429/1438/1980/files/57292442360.pdf
    • https://cdn.shopify.com/s/files/1/0430/3477/1607/files/56987804185.pdf
    • https://cdn.shopify.com/s/files/1/0427/7311/9143/files/jimoletamotusovu.pdf
    • https://cdn.shopify.com/s/files/1/0432/4062/0200/files/29688217618.pdf
    • https://cdn.shopify.com/s/files/1/0436/9884/7896/files/74719729723.pdf
    • https://cdn.shopify.com/s/files/1/0431/6971/0241/files/23033388710.pdf
    • https://cdn.shopify.com/s/files/1/0430/3136/3747/files/la_canzone_del_sole_accordi.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_off00006f3f.bin
c2a34ffb02acbdeafb4ee23924921fc06643c66a01ad8095d40cff0d03f8faa3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F3F 5408 bytes
font_01_sfnt_off000081ac.bin
6578b3225db026c2ca4ebc1717772cc868df3850f6612ed4a3797012d5bf25c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81AC 10072 bytes

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