Malicious PDF — malware analysis report

Static analysis result for SHA-256 299f1dcd7055d035…

MALICIOUS

PDF

72.6 KB Created: 2020-12-09 11:57:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: bfa5f947493fa35e37459cc9ec20273e SHA-1: b9b665da793daa5da0689a4bde83e1597c1ae478 SHA-256: 299f1dcd7055d03539192eb7e8b46d0a4eaa91e92818555d2046b5c99c98de9b
214 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with at least two identified as malicious redirectors. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' and 'PDF_SEO_LINK_FARM' indicate a strong attempt to direct users to harmful sites. The ML classifier and ClamAV detection further support the malicious nature of this document, suggesting it's a phishing or trojan delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • 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://gettraff.ru/aws?utm_term=ps3+emulator+for+android+direct In PDF document text
    • https://netopanuneju.weebly.com/uploads/1/3/4/4/134493403/3839915.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384644/normal_5fa821d087848.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368224/normal_5f89e6471eaa0.pdfIn PDF document text
    • https://bojuwidus.weebly.com/uploads/1/3/4/6/134698781/498f31712cb21e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415531/normal_5fc2533f45948.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480161/normal_5fc5bf1fede81.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372101/normal_5f9e2f9a907fb.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/5fc2de36a5bc066edfb2733d/t/5fc95238f35c5801706ec70e/1607029304538/cuisinart_knife_set_reviews.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe0b453570fb44d1ca6d93/1606290247423/condo_questionnaire_fee_florida.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/758dcd0f-fa5b-4cc4-a7ba-62738867f8d6/wudaguk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc11db20-3522-48bf-86f3-735a5c185a9f/betusejedifutow.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf56f93c6ccf69f3556966/1606375165923/bezetud.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_off0000e022.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE022 5332 bytes
SHA-256: 58f523b420688bde4724772ccc2a5e6ef8dddd4185d1e251b28570f944344ea4
font_01_sfnt_off0000f225.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF225 10312 bytes
SHA-256: ea0d326db7f9c248e04f90fcb75a623934298fc978bcf81d579fe3663deed4ef

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