Malicious PDF — malware analysis report

Static analysis result for SHA-256 17801e98eadb3f3c…

MALICIOUS

PDF

48.6 KB Created: 2020-08-14 08:42:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5144b68ae0207beae49c61e27722d345 SHA-1: be2270394c1bfd317ca90b00f2363c04062bf6e7 SHA-256: 17801e98eadb3f3cff0abe268f76936fcfb0c28d26c8c01561f03b632e52ad8b
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, disguised with a seemingly innocuous search query. The document body and embedded URLs suggest a link farm or SEO poisoning tactic to drive traffic to malicious sites. While no scripts were explicitly extracted, the PDF structure and the presence of embedded URLs indicate a likely attempt to redirect the user to a malicious payload or phishing page.

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/wb?keyword=girl%20scout%20junior%20product%20designer%20badge%20requirements%20pdf
    • http://guvim.springspirit.org/uploads/1/3/2/6/132681670/23dbf4899.pdf
    • http://files.lindsaysilva.com/uploads/1/3/1/4/131436956/6804795c77.pdf
    • http://files.frenchvintagehifi.com/uploads/1/3/1/8/131856330/pefeja.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0432/3131/4077/files/dekobemodevabazifaluribeb.pdf
    • https://cdn.shopify.com/s/files/1/0428/2325/4179/files/20443009382.pdf
    • https://cdn.shopify.com/s/files/1/0434/4931/9577/files/portfolio_template_ppt.pdf
    • https://cdn.shopify.com/s/files/1/0434/5259/6374/files/diagnostic_test_for_tuberculosis.pdf
    • https://cdn.shopify.com/s/files/1/0433/5943/6951/files/carmax._com_car-_buying-_process_recall-_faq.pdf
    • https://cdn.shopify.com/s/files/1/0438/0003/5485/files/38020799799.pdf
    • https://cdn.shopify.com/s/files/1/0434/4646/8769/files/rutedo.pdf
    • https://cdn.shopify.com/s/files/1/0443/1478/7996/files/one_way_anova_journal.pdf
    • https://cdn.shopify.com/s/files/1/0439/4326/4411/files/rusogujasipireniduk.pdf
    • https://cdn.shopify.com/s/files/1/0434/1468/3813/files/deriresoseverofa.pdf
    • https://cdn.shopify.com/s/files/1/0431/4788/6743/files/simple_appointment_letter_format.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_off000070d0.bin
297ec395373e7ff8aac57d69d2f5895adddea783fa553798cec419af942518c3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70D0 5732 bytes
font_01_sfnt_off0000842a.bin
2c74ae664f7e4f1958dfba88ba1dd6e5fe5cb2aa06c41e50531a3ca195f816d1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x842A 10180 bytes
font_02_sfnt_off0000a702.bin
8405bb6ca9a6fb718a2e910e1cdde4d74ac2122cab0061dc5f772322db9c7ccd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA702 4324 bytes

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