Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d7a59aa96490fa7…

MALICIOUS

PDF

37.9 KB Created: 2020-08-02 21:25:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7ec943b18f6c8c958adc0983ec5c9525 SHA-1: c0dd26fa47a80beea7043c85533ac718170b6054 SHA-256: 1d7a59aa96490fa799a72b91c3ecf1e03c77cad9d4198f28fb5eed6fe3f65ee8
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, many of which point to external PDF files hosted on Shopify. One of these links, 'https://ttraff.cc/pify?keyword=ryobi+31cc+trimmer+manual', is identified as a malicious redirector. The document body, though heavily obfuscated, appears to contain the same URL, suggesting a lure to a malicious site disguised as a document. The presence of numerous links and the malicious redirector indicates a phishing or redirection attack.

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.cc/pify?keyword=ryobi+31cc+trimmer+manual
    • http://files.paulforattleboro.com/uploads/1/3/1/4/131438539/wudorobevirodivinar.pdf
    • http://files.mayaabasketball.com/uploads/1/3/1/3/131398094/3f7e02a.pdf
    • http://files.naturesspiritflytying.net/uploads/1/3/0/8/130813851/wuvetozaxumiz.pdf
    • https://cdn.shopify.com/s/files/1/0428/6644/2406/files/12343739518.pdf
    • https://cdn.shopify.com/s/files/1/0440/7368/1061/files/28257583461.pdf
    • https://cdn.shopify.com/s/files/1/0431/1026/9085/files/nubamubigejuzukirobogife.pdf
    • https://cdn.shopify.com/s/files/1/0439/1947/4856/files/serazavoditigikadesagowu.pdf
    • https://cdn.shopify.com/s/files/1/0438/2962/4992/files/tokalavuvu.pdf
    • https://cdn.shopify.com/s/files/1/0431/4054/6714/files/nuwalula.pdf
    • https://cdn.shopify.com/s/files/1/0438/5269/3654/files/zivadifibeperoratifikak.pdf
    • https://cdn.shopify.com/s/files/1/0431/1305/4359/files/85432190381.pdf
    • https://cdn.shopify.com/s/files/1/0435/5152/2977/files/vokiximik.pdf
    • https://cdn.shopify.com/s/files/1/0430/3123/2674/files/rorefotiwogalozinawezarev.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/64989875230.pdf
    • https://cdn.shopify.com/s/files/1/0435/0876/0742/files/61252480067.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000049f0.bin
0f358d19be0d74762d433ae5020e15d50dc11d055d25889ab3754254ac264349		 pdf-font-stream PDF embedded font (sfnt) at offset 0x49F0 5116 bytes
font_01_sfnt_off00005b3e.bin
d5f66b340230cf8b20676d04b1ec364a4548dd0802b054f254af28a7347e804c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B3E 9764 bytes
font_02_sfnt_off00007cb2.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CB2 4324 bytes

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