Malicious PDF — malware analysis report

Static analysis result for SHA-256 76eb15d3d39a125e…

MALICIOUS

PDF

69.7 KB Created: 2020-12-18 01:07:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 77376d43848d6b8333eb1386d0214832 SHA-1: ed4f2ec5565bfd96c821f11d9d87e971783347ab SHA-256: 76eb15d3d39a125e1b1c39be7207f9c3468964ef1e094509a0cdca6284582c5c
156 Risk Score

Malware Insights

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

The PDF file contains a significant number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic. One of the primary external URIs points to 'traffnew.ru', suggesting a malicious intent to redirect users. The ClamAV detection and ML classifier further support its malicious nature, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffnew.ru/123?utm_term=animal+jam+codes+december+2016 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4503197/normal_5fbcab9e096eb.pdfIn PDF document text
    • https://pimuvetu.weebly.com/uploads/1/3/4/6/134635596/e4e1eb4fb86.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379626/normal_5fcf1185244e0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452199/normal_5fc1227992031.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483072/normal_5fc5e699052e0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417319/normal_5fc5b8c2d7faa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc5b2b88139af037665e822/t/5fc99995822fbd3263d8834e/1607047576772/91952899484.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc55ba5239b0722914ef72f/t/5fc600844f98375720ad3108/1606811781044/what_was_the_headright_system_in_georgia.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc29c38ff13940aa24a8d75/t/5fc778c3b7521d608a471cde/1606908100084/wotunemuk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5eed2d43-34be-45b8-9146-6e3c796f9594/83789444564.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc51312bd14ff0dd2b785be/t/5fc55190f3de5e49b5158358/1606766993178/debotireve.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc51ed3a3bf4b14abc46588/t/5fcc6694662d5e24e099a47a/1607231126878/adobe_photoshop_camera_application.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc14f89d26ff1194f767fe5/t/5fcaad2c9c4e6e5b1e0c607c/1607118125782/vinipilurejatuvobaju.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1b1e1c89e1c4b8fc407cc/t/5fd124f50d627f5be3999d2c/1607542005273/dan_the_man_8-_2-_1_secret_areas.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc793808c9e503d27aa85e4/t/5fcf57f88b174454e99d9881/1607423993644/maserati_quattroporte_for_sale_2018.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d3e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3E9 5768 bytes
SHA-256: 280ac34d3799ae028e9f35983d5f6d0f9cfb50ead73bfbd56d37941c9d8e4801
font_01_sfnt_off0000e779.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE779 10036 bytes
SHA-256: 764301c1e6fb05cde5238f1a7e4d208bb55364b9e4728053377ccf662f41511c

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