Malicious PDF — malware analysis report

Static analysis result for SHA-256 70d0d04b3e7346c5…

MALICIOUS

PDF

69.6 KB Created: 2020-11-13 05:24:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: c299b2e824321294f04852e5f3ec99e1 SHA-1: 908ffb09db29a63bb6b937634a69d3cfb6413639 SHA-256: 70d0d04b3e7346c5466efb001c1504bbaa05aab417032934690e695037810032
154 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://ggtraff.ru/aws?utm_term=guidewire+policy+center+latest+version In PDF document text
    • https://rogefiraf.weebly.com/uploads/1/3/4/5/134581109/6837612.pdfIn PDF document text
    • https://pidadilux.weebly.com/uploads/1/3/4/6/134666204/lafomu-fowesutom-dabikituduxun.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475861/normal_5fa9a2105db9b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407313/normal_5f98752b0f96a.pdfIn PDF document text
    • https://selamosufuk.weebly.com/uploads/1/3/4/4/134463567/ziporawen.pdfIn PDF document text
    • https://numilobes.weebly.com/uploads/1/3/4/2/134235742/8073295.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/perurulexi/danbury_ct_adult_education.pdfIn PDF document text
    • https://s3.amazonaws.com/lopadivupudexa/pima_county_marriage_certificate.pdfIn PDF document text
    • https://s3.amazonaws.com/kiwopusafize/proof_of_an_external_world.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_off0000cfe1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFE1 5352 bytes
SHA-256: 9169a52f2e6a144604420662ef1cc41e6f0cd800bdf0eea8194e56524b39fbc3
font_01_sfnt_off0000e245.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE245 11516 bytes
SHA-256: 4618580f50a68aacc12a7de314122aeb2326c25dac9c5090e4e969c60a36748c