Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce70ee6429edc05f…

MALICIOUS

PDF

67.3 KB Created: 2020-12-21 05:23:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: c51c998c307509e40961062339762fa6 SHA-1: 779becbc2a792432393f7109e46881d14e49715f SHA-256: ce70ee6429edc05f881ec62a46ba78d3fd134408870626f3ae147643089c633b
254 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains a lure suggesting the user install a browser extension or update to view content, a common social-engineering tactic. It also contains links to known malicious redirector infrastructure and a PDF link farm, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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://traffine.ru/strik?utm_term=how+to+check+my+ufone+number+owner In PDF document text
    • https://ludolukek.weebly.com/uploads/1/3/4/6/134699908/mulojixomi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380073/normal_5f8bcbc0900ee.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485442/normal_5fc46b074f944.pdfIn PDF document text
    • https://tujezaxe.weebly.com/uploads/1/3/4/6/134616668/zepebanibeve_vuponakewo.pdfIn PDF document text
    • https://pilolekolaf.weebly.com/uploads/1/3/4/6/134655903/lefogaboduge.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484609/normal_5fbcf39703f91.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384310/normal_5fb2787fef250.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473062/normal_5fb5b51422ee2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374374/normal_5f8f70f77c35b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457868/normal_5fc3af3815e90.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369503/normal_5fdfa6de3d2ab.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/nagev/administrao_estratgica_de_servios.pdfIn PDF document text
    • https://s3.amazonaws.com/zugutixe/chicago_mayoral_voting_guide.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_off0000caf6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAF6 5060 bytes
SHA-256: 2f19954b308c9fa2456ac1d639f38a1b9c8b130f289ce5826771849edbb44c54
font_01_sfnt_off0000dc20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC20 10832 bytes
SHA-256: b828d425ea7cda1a180fbca8bd89ebbed78c0b989016e94707d07c7ea518e488

Open this report in the interactive analyzer, or submit your own file for analysis.