Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b2693693ff186b0…

MALICIOUS

PDF

69.9 KB Created: 2020-11-29 04:32:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 43627268c060644d11e69c591601c4fa SHA-1: 90f01a8a67616aeb3cb38957a2eeca5aa1700dc7 SHA-256: 1b2693693ff186b00b6f07ecaffac252103e440f9d036a544d8a4698bcee6ed9
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 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://cctraff.ru/strik?utm_term=liver+detox+tea+yogi In PDF document text
    • https://cdn-cms.f-static.net/uploads/4412761/normal_5f99d1e7cbfda.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419192/normal_5fba34b76a29b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365636/normal_5f8712547b003.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387427/normal_5fac25d994eba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391024/normal_5f90b3addccac.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/rexogeguxosix/kixajuxozozexonew.pdfIn PDF document text
    • https://s3.amazonaws.com/lorifumofelu/mx_male_enhancement.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e078ce11-ee4e-4e1f-89c0-490befecad69/11734876908.pdfIn PDF document text
    • https://s3.amazonaws.com/panokojol/97616945317.pdfIn PDF document text
    • https://s3.amazonaws.com/wofaxil/trigonometric_identities_list.pdfIn PDF document text
    • https://s3.amazonaws.com/nijosinizo/67783289485.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/518e2d6e-2675-40bd-92e7-361fa250ace3/lukaru.pdfIn PDF document text
    • https://s3.amazonaws.com/wixanarer/liberty_property_management_modesto.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_off0000d738.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD738 4952 bytes
SHA-256: 43da593252275f247e73922e9d91de7b060bb17bb24b7980dc94d7256e970cab
font_01_sfnt_off0000e837.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE837 10112 bytes
SHA-256: a4854517fab878aa90aca2cf560da6823b0fd2a6ac82606ce859843fb924086d