Malicious PDF — malware analysis report

Static analysis result for SHA-256 87dba669c24aee3d…

MALICIOUS

PDF

34.1 KB Created: 2020-08-18 20:48:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7dfbc7684eeb398f6f04fc15404336c5 SHA-1: f0a5b9a9333fe10bafbfce6f5fe744464b286ae7 SHA-256: 87dba669c24aee3d20ebde0ca955f5f005cf32fa5858e87317fe4b6b68ef91fc
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=ecossaise+hummel+piano+sheet+music'. Additionally, it exhibits a PDF SEO link farm pattern, with numerous embedded links, including one to 'http://perozawe.miaedsall.com/uploads/1/3/0/8/130874633/bijezolifer_waxabarev_bajemav_rowerupeliguwel.pdf'. These findings indicate the document's primary purpose is to lure users to malicious sites.

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=ecossaise+hummel+piano+sheet+music
    • http://perozawe.miaedsall.com/uploads/1/3/0/8/130874633/bijezolifer_waxabarev_bajemav_rowerupeliguwel.pdf
    • https://cdn.shopify.com/s/files/1/0429/2991/4012/files/parasitologia_humana_david_pereira_neves_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/2182/0313/files/99471555748.pdf
    • https://cdn.shopify.com/s/files/1/0434/8598/6982/files/labelled_periodic_table.pdf
    • https://cdn.shopify.com/s/files/1/0434/1740/3559/files/20555454681.pdf
    • https://cdn.shopify.com/s/files/1/0440/1440/3742/files/sotepapajuzebewalig.pdf
    • https://cdn.shopify.com/s/files/1/0436/9825/8088/files/35180414307.pdf
    • https://cdn.shopify.com/s/files/1/0428/6880/1695/files/vorefiberizedus.pdf
    • https://cdn.shopify.com/s/files/1/0429/6287/8618/files/39182254898.pdf
    • https://cdn.shopify.com/s/files/1/0432/3740/8936/files/kubeparemu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9780/1375/files/cancellation_letter_sample.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_off0000469f.bin
fb8b066493a80f5ab5b26b5ad0e508706cc6ba6014b9a10a5902bc26e7f51c15		 pdf-font-stream PDF embedded font (sfnt) at offset 0x469F 5032 bytes
font_01_sfnt_off0000579c.bin
6dd5e08f84e53806bf0f385fc6dea78f9aa1a65b758b3f506402e5e662beb1de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x579C 10876 bytes

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