Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b539e217fc6558d…

MALICIOUS

PDF

39.6 KB Created: 2020-08-15 22:30:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 84092df4a8b3060f535b367e7a8de440 SHA-1: 62ca3fd578e10340eb4fd5fbb1bfd23e8ce064c6 SHA-256: 7b539e217fc6558d9dcb91c2a808bd5d7eddecd3b53f972dd8558404a59d62f0
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a link farm designed to manipulate search engine results, leading to a malicious redirector. The primary malicious URL is https://ttraff.cc/wb?keyword=kali%20linux%20hacking%20ebooks%20download%20in%20pdf%202017, which is likely used to distribute further malware or phishing content. The document body also contains numerous links to Shopify domains, some of which are benign, but others are part of the link farm. No scripts were extracted from this sample.

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/wb?keyword=kali%20linux%20hacking%20ebooks%20download%20in%20pdf%202017
    • http://files.cobramwillows.com/uploads/1/3/0/7/130775518/lubojukizar_gitijobutat.pdf
    • http://files.fumctupelo.com/uploads/1/3/2/7/132741555/381037.pdf
    • http://jasusebo.autumnbeckman.com/uploads/1/3/0/7/130740596/jobiki.pdf
    • http://xivebodof.redtwoapps.co.uk/uploads/1/3/1/3/131380600/5f8e28f8.pdf
    • http://files.parkersformalwear.com/uploads/1/3/1/4/131438869/dejoxakizofaganub.pdf
    • https://cdn.shopify.com/s/files/1/0430/5344/9367/files/20081756148.pdf
    • https://cdn.shopify.com/s/files/1/0431/5712/7336/files/fobedutab.pdf
    • https://cdn.shopify.com/s/files/1/0427/8799/5814/files/adding_integers_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0434/0485/3402/files/after_school_of_the_earth.pdf
    • https://cdn.shopify.com/s/files/1/0434/2022/1607/files/notaditutubepefusi.pdf
    • https://cdn.shopify.com/s/files/1/0434/2287/5800/files/52340080376.pdf
    • https://cdn.shopify.com/s/files/1/0429/4960/7590/files/67795184160.pdf
    • https://cdn.shopify.com/s/files/1/0433/5193/3078/files/chain_rule_examples.pdf
    • https://cdn.shopify.com/s/files/1/0428/5094/3142/files/zumipaxagaduxujufagaza.pdf
    • https://cdn.shopify.com/s/files/1/0438/2490/6400/files/sokeledo.pdf
    • https://cdn.shopify.com/s/files/1/0440/7263/2470/files/36629174000.pdf
    • https://cdn.shopify.com/s/files/1/0433/8604/4572/files/divezukunewipefim.pdf
    • https://cdn.shopify.com/s/files/1/0432/4681/3344/files/chuyn_t_sang_file_nh.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_off000058fd.bin
4d5afc799f670f8eeead02d257d8fdb88ae44cb9ee841e3013b93166bf3d74fd
pdf-font-stream PDF embedded font (sfnt) at offset 0x58FD 6060 bytes
font_01_sfnt_off00006db2.bin
3ef8b02de05d4f9dfb9819f9c41efbc9bc8d51896d18eb4ec489fcb0498736c0
pdf-font-stream PDF embedded font (sfnt) at offset 0x6DB2 10424 bytes