Malicious PDF — malware analysis report

Static analysis result for SHA-256 00568a4d451c28a4…

MALICIOUS

PDF

42.5 KB Created: 2020-08-01 10:45:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: db75d9f5ac3d0e65cc9fa3c9ce382f77 SHA-1: ff543699e465f4f79cce4da7ffaaf8d06c0c6229 SHA-256: 00568a4d451c28a4b4c2618906f9da80324b5a6002145829f8e194f7043461ab
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to Shopify domains, but one critical link redirects to a known malicious domain (ttraff.cc). This suggests a tactic of using seemingly benign domains to host or redirect to malicious content. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=2006+honda+foreman+500
    • http://files.alwayslovedal.com/uploads/1/3/1/1/131164479/gojototevumeken_nividujudajeman.pdf
    • http://files.abingtonpolishing.com/uploads/1/3/1/4/131454034/bipepunuzowugus.pdf
    • http://files.cafevol.com/uploads/1/3/2/3/132303131/jupotavopagalevokave.pdf
    • http://files.insitulearning.org/uploads/1/3/0/9/130970009/75a160e4227a337.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0436/2944/5273/files/8483161832.pdf
    • https://cdn.shopify.com/s/files/1/0429/5114/7676/files/zeniba.pdf
    • https://cdn.shopify.com/s/files/1/0431/7849/2062/files/83566819910.pdf
    • https://cdn.shopify.com/s/files/1/0439/3009/1688/files/tetagusunuviwip.pdf
    • https://cdn.shopify.com/s/files/1/0433/1575/7214/files/33624715032.pdf
    • https://cdn.shopify.com/s/files/1/0433/3282/9342/files/5211554335.pdf
    • https://cdn.shopify.com/s/files/1/0432/6863/6834/files/45346519083.pdf
    • https://cdn.shopify.com/s/files/1/0428/8207/2743/files/kumazun.pdf
    • https://cdn.shopify.com/s/files/1/0431/2806/2109/files/17377704573.pdf
    • https://cdn.shopify.com/s/files/1/0434/0521/3854/files/63161309910.pdf
    • https://cdn.shopify.com/s/files/1/0432/0428/0481/files/59961172952.pdf
    • https://cdn.shopify.com/s/files/1/0434/6681/7689/files/vikuju.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c54.bin
2400f92b727758b87884f8c790948344e17ba762f6233ada876dd180e3ccce97		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C54 5052 bytes
font_01_sfnt_off00006d36.bin
45680ed3d4228af3dd20b2b891a665a8b9a7552ee5fa85c5cb51a9a04f64d97d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D36 9912 bytes
font_02_sfnt_off00008f24.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F24 4324 bytes

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