Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bcf08dda14f052d…

MALICIOUS

PDF

34.1 KB Created: 2020-08-12 03:24:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 405b4f09c9052aeaa98fdecd9fc49dff SHA-1: 6ad246069ebb26e4faee91f2a329a8a0e0522830 SHA-256: 9bcf08dda14f052da5cbdf48b87298e18e3199d3fc4b1898b2c97ad28749a73c
120 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 external PDF files, suggesting a link farm or SEO manipulation tactic. One prominent URL, https://ttraff.ru/pify?keyword=btec+level+3+health+and+social+care+textbook+pdf, is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, indicating its likely purpose is to redirect the user to malicious infrastructure.

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=btec+level+3+health+and+social+care+textbook+pdf
    • http://files.saratogacoffeetraders.com/uploads/1/3/1/3/131380849/7115291.pdf
    • http://files.livinggodsmission.com/uploads/1/3/0/8/130874413/femobupowufebekoluta.pdf
    • http://bumaz.bradycampaignsd.org/uploads/1/3/0/9/130969868/c5a4ca98.pdf
    • http://muloxi.essentialbeingcoaching.com/uploads/1/3/1/6/131606289/jeguni-dapudeme-xafokevidep.pdf
    • https://cdn.shopify.com/s/files/1/0434/5469/3541/files/aparatos_de_ortopedia_dental.pdf
    • https://cdn.shopify.com/s/files/1/0433/4849/2438/files/cement_mixing_ratio.pdf
    • https://cdn.shopify.com/s/files/1/0432/2790/6206/files/palelewisagenemalo.pdf
    • https://cdn.shopify.com/s/files/1/0430/8477/5577/files/21818610930.pdf
    • https://cdn.shopify.com/s/files/1/0437/5032/6421/files/88715576574.pdf
    • https://cdn.shopify.com/s/files/1/0436/2846/2233/files/pathfinder_core_rulebook_download.pdf
    • https://cdn.shopify.com/s/files/1/0443/0426/9468/files/mobile_application_development_black_book.pdf
    • https://cdn.shopify.com/s/files/1/0435/0282/9734/files/http_sprint_com_powerdeck.pdf
    • https://cdn.shopify.com/s/files/1/0437/7424/7069/files/lozuxiguzixuzumekusa.pdf
    • https://cdn.shopify.com/s/files/1/0427/4854/3142/files/acronyms_dictionary.pdf
    • https://cdn.shopify.com/s/files/1/0428/7476/5475/files/les_autres_et_moi.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_off0000462e.bin
1639b19dc6bb3c037ae672ed5fb40c8e317e62212a9df90cd5a3beb14204b290		 pdf-font-stream PDF embedded font (sfnt) at offset 0x462E 5788 bytes
font_01_sfnt_off000059d1.bin
650e7f15fb049f6222eaeac8567de05496e39ff333e10f96d0813a6965966edd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59D1 9812 bytes

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