Malicious PDF — malware analysis report

Static analysis result for SHA-256 934bad261129a751…

MALICIOUS

PDF

68.0 KB Created: 2021-01-03 00:01:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 56afc21683605ed81e0668dc65a005db SHA-1: e93f34fbf36dccc7f23ea7fc7eda29f84fd8b69c SHA-256: 934bad261129a75152ad62f71e40138ca56bd8687e70e1cc5fef7dea22213550
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://cctraff.ru/123?utm_term=ez+up+canopy+replacement+bag'. This indicates the document is designed to lure users to a potentially harmful website. The ML classifier and ClamAV also flagged this PDF as malicious, reinforcing the phishing or malware distribution intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/123?utm_term=ez+up+canopy+replacement+bag In PDF document text
    • https://jebapawobukil.weebly.com/uploads/1/3/4/5/134521284/domitub.pdfIn PDF document text
    • https://welomutulek.weebly.com/uploads/1/3/4/8/134873792/dafuxuwiwimelogemome.pdfIn PDF document text
    • https://cdn.sqhk.co/wekonexiw/6jSbzgf/konodoganuri.pdfIn PDF document text
    • https://bemetezebore.weebly.com/uploads/1/3/4/8/134882820/masusosuvisul-xisinexor-pujufom.pdfIn PDF document text
    • https://cdn.sqhk.co/kekazorub/gdigcgg/60334134704.pdfIn PDF document text
    • https://jitebemaduk.weebly.com/uploads/1/3/4/6/134692965/e826054632.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/zetare/topographic_map_of_india.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cdbb367e-d605-46eb-ba8d-84076eb8ead0/10119216631.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ec91274-8fe9-4bf4-b0b3-1cf8007f87b2/black_desert_online_crafting_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37240b0b-923e-45e0-a35b-5044c6ff235a/rawuvekemafi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/96a3f6df-92ba-4330-9e4b-8e3b66ef9801/oceanhorn_2_switch_review_ign.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b82f3384-0c66-44ee-9c8b-e9285ff289d2/27147219965.pdfIn PDF document text
    • https://s3.amazonaws.com/lotibabakuj/community_acquired_pneumonia_guidelines_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/sikuva/human_rights_watch_world_report_2019_venezuela.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_off0000cbe5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBE5 5324 bytes
SHA-256: a60733773b1b936b47f4d0bf848bf9892e751a62d62b5d057f6c9dd9c0c513bb
font_01_sfnt_off0000de05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE05 10312 bytes
SHA-256: dd84dfdba3fb510a1fdecfeb5b79d7e74f8ef45f50f942baab299ae4ecfad52d