Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe46b6155d2cd3bc…

MALICIOUS

PDF

37.2 KB Created: 2020-08-31 02:59:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 461450a59117361df08e075b0dcc7ab2 SHA-1: 702e00c1ec97ce48442b01a61ae044329a511d5b SHA-256: fe46b6155d2cd3bc658ab7d58be4721fa42202cedb1bd023f2decd12e1d5d947
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with one specifically pointing to a known malicious redirector at 'https://ttraff.ru/wix?keyword=350+18+2+re'. This suggests the document's primary purpose is to lure users to malicious websites. The presence of numerous other links, many hosted on Shopify, indicates a link farm strategy to obscure the malicious destination or to appear as legitimate content.

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/wix?keyword=350+18+2+re
    • https://cdn.shopify.com/s/files/1/0434/2179/4460/files/44757696033.pdf
    • https://cdn.shopify.com/s/files/1/0430/1773/2249/files/66557945948.pdf
    • https://cdn.shopify.com/s/files/1/0435/4621/4564/files/auto_air_conditioning_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/7063/5680/files/29787150557.pdf
    • https://static.usrfiles.com/ugd/83f04e_7695de20d6324c0287df902c6b440a3b.pdf
    • https://cdn.shopify.com/s/files/1/0437/7434/5365/files/xufovaviwefape.pdf
    • https://cdn.shopify.com/s/files/1/0428/2066/5510/files/wudasokasazadijokodev.pdf
    • https://cdn.shopify.com/s/files/1/0432/7954/8580/files/94634031048.pdf
    • https://cdn.shopify.com/s/files/1/0433/2870/0571/files/3336533574.pdf
    • https://cdn.shopify.com/s/files/1/0430/0485/4426/files/41864747261.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/42479515564.pdf
    • https://cdn.shopify.com/s/files/1/0434/3182/1473/files/audit_committee_meeting_minutes_template.pdf
    • https://cdn.shopify.com/s/files/1/0432/4206/1986/files/arterial_hypertension_treatment_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0429/1287/4662/files/vufunokobolalaxi.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_off000053bc.bin
6e0fc82dea12422bb5dd7725a953b57b6b162ff89d1d6ce29a03d31b3c401401		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53BC 4972 bytes
font_01_sfnt_off000064ac.bin
7b6b45b6b75758f1f06ec4d6ee1817f39ab91af02122759242bf89b9f8a21267		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64AC 10744 bytes

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