Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dff77b59e9097d5…

MALICIOUS

PDF

38.8 KB Created: 2020-08-16 12:48:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 781342382914fafd497238423ca1516b SHA-1: be30ad52b722f59e357ac01e3f7fd3628555150b SHA-256: 1dff77b59e9097d50631b441b185576d5f25381bcce105a4621a28d4d6d04af3
120 Risk Score

Malware Insights

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

The PDF file contains embedded links that are identified as malicious redirectors. The document body, though partially corrupted, contains text referencing 'Cisco jabber softphone for vdi' and a URL that is flagged as a malicious redirector. This suggests a social engineering attack aiming to trick the user into visiting a compromised site.

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=cisco+jabber+softphone+for+vdi
    • http://vamosevi.accordingtohiswordworshipcenter.com/uploads/1/3/1/4/131453870/matowukofavu-tovedevodox.pdf
    • https://cdn.shopify.com/s/files/1/0434/2621/8134/files/76342200245.pdf
    • https://cdn.shopify.com/s/files/1/0430/8366/1461/files/bigedozonufukujaxifugor.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/31082235151.pdf
    • https://cdn.shopify.com/s/files/1/0438/5089/1424/files/zuwanetebumakopixob.pdf
    • https://cdn.shopify.com/s/files/1/0434/0393/5902/files/kufotevuparukofofoges.pdf
    • https://cdn.shopify.com/s/files/1/0431/1531/5349/files/medatiretizebatup.pdf
    • https://cdn.shopify.com/s/files/1/0437/1133/2503/files/ageless_body_timeless_mind_book.pdf
    • https://cdn.shopify.com/s/files/1/0441/1277/3272/files/62090544307.pdf
    • https://cdn.shopify.com/s/files/1/0440/8098/8310/files/business_plan_for_small_business.pdf
    • https://cdn.shopify.com/s/files/1/0430/7176/6690/files/fubunofudusanodubanima.pdf
    • https://cdn.shopify.com/s/files/1/0449/4937/3087/files/annexes_icao.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_off000058d8.bin
b82402634bfd031fdac091d6929d1f61c882e7553d87a05e233319b462c414c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58D8 5392 bytes
font_01_sfnt_off00006b26.bin
8234978e29e7453ebba9d69b8fa808dd9c8aa2eba1ab8de61dad6d38d9099e78		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B26 10544 bytes

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