Malicious PDF — malware analysis report

Static analysis result for SHA-256 17a088f72de278ff…

MALICIOUS

PDF

66.7 KB Created: 2020-12-22 14:44:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 9430becb33cb1e78c0f7a61e7f695094 SHA-1: 688d5e4db637479ec87eab8ed1e59f552a9dac70 SHA-256: 17a088f72de278ffc119b9affe9ca36e9ee42cde5dd035838aef4644467c1aa5
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 0.9996

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=certified+swing+manager+mcdonald%2527+s In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367268/normal_5f8df22fa5a24.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405895/normal_5fab211a6c29e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449399/normal_5fe1d3a420091.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401525/normal_5fb3c98b74588.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469849/normal_5fd8cbc741984.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/5fc0ea36f7cf8c75402afe56/t/5fce48166f0099009e9253f4/1607354391545/b612_beauty_filter_camera_mod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66448698-8249-456f-bd80-d305b7cdb7e1/asus_maximus_vii_hero_manual.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc54b0340f1034a5cc5e190/t/5fc622284e98326c02e2da77/1606820394802/35265925733.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc50f7fa3bf4b14abc3d51e/t/5fc62d833570fb44d1d549ce/1606823299906/8533002317.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a04c2ac-b9bb-43aa-9947-ea65966d51c9/ark_ice_titan_id.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_off0000c659.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC659 5372 bytes
SHA-256: d991ddb36d9e3a53aceba7ae432fd1651956404af91d7a2db9790f017c69d3b5
font_01_sfnt_off0000d89f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD89F 11572 bytes
SHA-256: 9010e415cc534a2dea279226bf3e265cf14e9b79b9a6898a67d81589aeb57a36