Malicious PDF — malware analysis report

Static analysis result for SHA-256 60f80a07ed9b2acd…

MALICIOUS

PDF

41.9 KB Created: 2020-09-03 21:48:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 863fc88e48776178bb6707206542a18e SHA-1: 6b8184339312f4a7657f9d346f2db0b46ffd1bba SHA-256: 60f80a07ed9b2acdd7e321255e14dfdff0fe6235701e4b07c9b1ba6717d931dc
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link that redirects to malicious infrastructure, likely as part of a phishing or scam campaign. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK and the presence of the URL https://ttraff.me/wix?keyword=accountant+assistant+resume+format strongly indicate this malicious intent. The document body, though heavily obfuscated, also contains this URL, reinforcing the finding.

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.me/wix?keyword=accountant+assistant+resume+format
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/b8c837_e195907eaac446be838b39e13d16cf2f.pdf
    • https://static.usrfiles.com/ugd/9f69bd_ad9152d0e80d4b4a97ef724854b9e91b.pdf
    • https://static.usrfiles.com/ugd/9b7d8a_a2a21100594945f79697693e2b93f069.pdf
    • https://static.usrfiles.com/ugd/b8c837_6d93da4b6e9e4bac8ba8ce9981073a82.pdf
    • https://static.usrfiles.com/ugd/73f3b0_b1e2dfe8e9ec43e3bbdae91c88fbd644.pdf
    • https://static.usrfiles.com/ugd/585b1d_c837833d49a1416caaab4a6fee0c3178.pdf
    • https://static.usrfiles.com/ugd/80bfa9_bffd7ba1a5f0499fade952dcaf6d0e24.pdf
    • https://static.usrfiles.com/ugd/3e0cb9_007b298caef646d9af07419c17b6ee74.pdf
    • https://static.usrfiles.com/ugd/ac72e0_28492527a06b42baaeeba4f80d74a000.pdf
    • https://static.usrfiles.com/ugd/bbd3cf_fb05c95169434a7fbc21e60e7f294a53.pdf
    • https://static.usrfiles.com/ugd/95089d_b520bfa622524feea7d941297bbb8550.pdf
    • https://static.usrfiles.com/ugd/1d3654_3ce9ea8447294166883b2473f0549788.pdf
    • https://static.usrfiles.com/ugd/61f964_b80e3b4091f544b592b292b9ab58ac3d.pdf
    • https://static.usrfiles.com/ugd/bc79a4_9373c28b7341495d96076996503ab86c.pdf
    • https://static.usrfiles.com/ugd/0dd040_0d470e6e911d4b9fa9c11e543f1ce916.pdf
    • https://static.usrfiles.com/ugd/b8c837_6733231724be44e0b5452b979acb5e2c.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000067f9.bin
40f9201ccab3a3eb0316cd5ddf42a5b929f8e61590a255c36d3950e06a4aabb8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67F9 4984 bytes
font_01_sfnt_off000078d6.bin
b03a1aae192e04745bf00f4d8c8f8f6ef19de692669ce9e0594c725186b628ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78D6 9844 bytes

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