Malicious PDF — malware analysis report

Static analysis result for SHA-256 75649546b771d465…

MALICIOUS

PDF

66.8 KB Created: 2020-09-28 21:18:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0361d0713b2e3982f53bebf8bd7bcf3a SHA-1: 86e1539ca9b49fd2eb04d6efd2a7ad5fa25169a0 SHA-256: 75649546b771d46517280cabd53b362b47f5431a21f3c72231e3699b90019ace
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains embedded links that point to known malicious redirectors and a link farm, suggesting an attempt to lead the user to malicious content or phishing sites. The heuristic 'SE_INVOICE_LURE' further supports the idea that the document is designed to trick the user into clicking the malicious links by appearing as a payment-related document. No scripts were extracted, but the presence of malicious links and the lure indicate a high likelihood of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://gettraff.ru/mozel?keyword=payment+of+gratuity+act+1972+pdf+in+tamil
    • http://kevaguvop.lilcameronwrites.com/uploads/1/3/0/9/130970004/galapa.pdf
    • http://files.conniefay.com/uploads/1/3/2/6/132681362/zaxab_rijodanifenured_vosafekoz.pdf
    • http://files.thefiveelementsretreats.co.uk/uploads/1/3/2/7/132740462/06cde4.pdf
    • https://site-1037203.mozfiles.com/files/1037203/nebezezun.pdf
    • https://site-1037204.mozfiles.com/files/1037204/10675929302.pdf
    • https://site-1036661.mozfiles.com/files/1036661/31853868250.pdf
    • https://site-1036633.mozfiles.com/files/1036633/gexujomelodoxu.pdf
    • https://site-1037235.mozfiles.com/files/1037235/xezijuwekajurenoxoxinemig.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0450/2857/3334/files/cadenas_alimentarias.pdf
    • https://cdn.shopify.com/s/files/1/0431/6577/8080/files/95693545198.pdf
    • https://cdn.shopify.com/s/files/1/0431/2917/6232/files/tobor.pdf
    • https://cdn.shopify.com/s/files/1/0430/8054/8505/files/53760319705.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_off0000bca8.bin
c33d3b88433cd7960b975b28b63842f8421cabcad7d906a3e51edebefd07a750		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBCA8 5820 bytes
font_01_sfnt_off0000d07a.bin
a8ba320a0ac8a73a5a8cc2c47ba30bd151ec5f51af4d5ac0b9daf85eaa8f1301		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD07A 1936 bytes
font_02_sfnt_off0000d9bf.bin
3d5ecfd850b6ef160f6b23fb20df1af759407cb7524c9036f743a8d0700e2715		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD9BF 10516 bytes

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