Malicious PDF — malware analysis report

Static analysis result for SHA-256 06068e2094fa3cd9…

MALICIOUS

PDF

42.8 KB Created: 2020-08-22 01:40:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b1993dec1cabc640c68ba8e79f1ce394 SHA-1: 36d7a38d5c5f5a0f90c085197b6d13d5b000b8b1 SHA-256: 06068e2094fa3cd9935bed15a469e539bcd435d8b47ad9e199b56981e466559d
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically 'ttraff.com'. It also exhibits characteristics of a PDF link farm, embedding numerous external links, many of which point to Shopify-hosted PDFs. The ML classifier strongly indicates maliciousness, and the embedded URL 'https://ttraff.com/pify?keyword=agree+three+verb+forms' is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware distribution site.

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/pify?keyword=agree+three+verb+forms
    • http://files.msamsonovcpa.com/uploads/1/3/1/6/131606819/migojugelo-nezibofedolegep-fibagoru.pdf
    • http://files.collegewomensclubofdayton.org/uploads/1/3/1/4/131483317/279d123.pdf
    • http://files.learningmanager.ro/uploads/1/3/1/4/131408209/4a1111ad3e.pdf
    • http://files.shopthrillvintage.com/uploads/1/3/0/7/130775200/4881034.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/5543/9255/files/chinese_visa_application_form_v._2013_a.pdf
    • https://cdn.shopify.com/s/files/1/0435/8491/3563/files/73745967796.pdf
    • https://cdn.shopify.com/s/files/1/0434/0839/2353/files/leponoxomitab.pdf
    • https://cdn.shopify.com/s/files/1/0447/5263/4005/files/essay_templates_for_college.pdf
    • https://cdn.shopify.com/s/files/1/0435/5771/6119/files/20633527158.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lipowu.pdf
    • https://cdn.shopify.com/s/files/1/0431/5319/5157/files/sawaradafufopos.pdf
    • https://cdn.shopify.com/s/files/1/0434/7900/7398/files/deferred_annuities.pdf
    • https://cdn.shopify.com/s/files/1/0430/8133/4951/files/que_es_un_brief_publicitario.pdf
    • https://cdn.shopify.com/s/files/1/0437/4849/1415/files/analytical_method_validation_guideline.pdf
    • https://cdn.shopify.com/s/files/1/0431/9523/6513/files/zisidavetexo.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_off00006aaa.bin
2061a95e63d40f1c58828458a138534cfc8230de3f78a1b9392f981178a48c9e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AAA 5128 bytes
font_01_sfnt_off00007c0f.bin
48d1d1f198fdb412681bb328906e3d4d6e8d0f2e499a16886e706085e08723dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C0F 10120 bytes

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