Malicious PDF — malware analysis report

Static analysis result for SHA-256 119c376e66f09db6…

MALICIOUS

PDF

48.8 KB Created: 2020-08-31 16:43:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c8516bf41e126c1499e9347de878d5ce SHA-1: 2540f3df1cd5cbbecddeafa58de75411cda706f5 SHA-256: 119c376e66f09db65654b3ace538659f95f27241e94771b825629e1f8071913f
154 Risk Score

Malware Insights

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

The PDF contains embedded links that point to a known malicious redirector, ttraff.com, disguised with a seemingly legitimate keyword. The ML classifier strongly indicates maliciousness. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect users to malicious content, likely for phishing or scam purposes.

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.com/wix?keyword=14th+finance+commission+guidelines+for+gram+panchayat
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/bf0735_d5469eebb4c2476f8e799865d59c669b.pdf
    • https://static.usrfiles.com/ugd/b8c837_9fc565d8a5fe4862abe0ccba70beb78f.pdf
    • https://static.usrfiles.com/ugd/b8c837_b163dd7a12994e479ffc31d4ffef78a0.pdf
    • https://static.usrfiles.com/ugd/e3ed1f_d40006070e584dc2ab9fc3469323d5d3.pdf
    • https://static.usrfiles.com/ugd/b8c837_423da957b24945749e3364e832b5d02a.pdf
    • https://static.usrfiles.com/ugd/b8c837_edaa6cb7a74a450c919441e89df33d72.pdf
    • https://static.usrfiles.com/ugd/6f7357_2a3ec6ebba754fa79f84ee49ae9b3408.pdf
    • https://static.usrfiles.com/ugd/b8c837_90f3194e6bc64949924889cee6bf18be.pdf
    • https://static.usrfiles.com/ugd/0e9fc2_80fbca02757740ba9919f85c7fd5e12f.pdf
    • https://static.usrfiles.com/ugd/f6a907_816c74a393c746dfb6e497f8b5ace3f9.pdf
    • https://cdn.shopify.com/s/files/1/0429/1821/5846/files/nixuwaxupetekajuzenubaju.pdf
    • https://cdn.shopify.com/s/files/1/0428/7689/5398/files/bella_ciao_guitar_tab.pdf
    • https://cdn.shopify.com/s/files/1/0428/6991/5814/files/tefobedajas.pdf
    • https://cdn.shopify.com/s/files/1/0435/7623/0046/files/worulafipetimedaje.pdf
    • https://cdn.shopify.com/s/files/1/0435/6803/8047/files/2339506717.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006164.bin
d6baaf2ceb10286f8ceacef79917ed83a94625d68c6bb493d1212da5fe7fa359		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6164 5716 bytes
font_01_sfnt_off000074be.bin
ef762f93d3df1a2040cbb54a1ac1968804d246ddee3c6f37204c7c371520e360		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74BE 14032 bytes
font_02_sfnt_off0000a0da.bin
2bac0d7445fe5768be44ad7a0943804bdfa4a71883f7703ca85e4e7e3f76abd8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA0DA 16100 bytes

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