Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1e060a5dfded975…

MALICIOUS

PDF

57.8 KB Created: 2020-12-15 07:06:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 84c9a4eb662770e054c4f3c38fe1920d SHA-1: dd45d2c108c8640acb1712657de7f5a115e09d1e SHA-256: b1e060a5dfded97548d19e9391e8047a518598819284eb7078382329df4027e3
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 0.9994

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://cctraff.ru/strik?utm_term=monster+hunter+world+bombardier+gunlance In PDF document text
    • https://pidadilux.weebly.com/uploads/1/3/4/6/134666204/kasibe-mibotuwesetoz.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/tunitulo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416790/normal_5fd796171adf3.pdfIn PDF document text
    • https://xovatikawe.weebly.com/uploads/1/3/4/7/134726086/wafaribikova-xubotikomabana-zitanaxedaga-wukagogajuv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382784/normal_5fa06cdd93a52.pdfIn PDF document text
    • https://rajaxamakato.weebly.com/uploads/1/3/2/3/132302926/38fba30e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/223d6825-437c-432f-b8c5-cd6310feac9f/1000_h_street_nw_washington_district_of_columbia_20001.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/293cfe2a-c30a-47d3-90be-f9de178d929e/54358589116.pdfIn PDF document text
    • https://s3.amazonaws.com/zamuriza/28446629897.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bda188e3-9c2b-4c54-9950-242db480147e/ignatius_catholic_study_bible_online.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_off0000a8ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA8EE 5588 bytes
SHA-256: 0db8256ee157d82181e2cbe2461a02037d12cb7ff6931f0a5d86c8b05d0b9a22
font_01_sfnt_off0000bbda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBBDA 9048 bytes
SHA-256: 9cf1e67b1ce8e129100fcb308ac43b106b89adf997f450b52b14ff0d90573227