Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea234bc0e35c11e5…

MALICIOUS

PDF

69.4 KB Created: 2021-01-05 20:22:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 787bb53a3d0929a456f2159558392760 SHA-1: e379f31a5f6a7233bf841d6a0eb9885bcba9c90b SHA-256: ea234bc0e35c11e5a2002ad18efa72a2ae8c51c3c2bbc441b537c8ff6f57fccc
214 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically 'traffking.ru'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external PDF links, with 'fafetomipisiso.weebly.com' being one of the first identified. The ML classifier also strongly flagged this PDF as malicious. These indicators suggest the file is designed to lure users to potentially harmful websites or engage in SEO manipulation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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://traffking.ru/aws?utm_term=best+android+phones+under+25000+in+nepal In PDF document text
    • https://fafetomipisiso.weebly.com/uploads/1/3/4/6/134603542/1749475.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384632/normal_5fb7a97771f86.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393020/normal_5f9ee74837ae6.pdfIn PDF document text
    • https://cdn.sqhk.co/fibapezo/jihbQrU/roku_tv_remote.pdfIn PDF document text
    • https://refedekejevejat.weebly.com/uploads/1/3/4/3/134312363/pirebepel-fodoporekoxub-vifita.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383917/normal_5fd0efb144fff.pdfIn PDF document text
    • https://fosobezi.weebly.com/uploads/1/3/4/8/134898374/totig_gurivogukugop.pdfIn PDF document text
    • https://cdn.sqhk.co/vagewovupug/jarjghZ/25204435195.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/pewebopufupe/vsco_x_apk_latest_version.pdfIn PDF document text
    • https://s3.amazonaws.com/fibesezati/free_able_resume_templates_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxuledo/55954012989.pdfIn PDF document text
    • https://s3.amazonaws.com/nafibanefexex/marketing_automation_platform_comparison.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7055fe5-4625-4ff1-80c1-981150c825c3/dragon_rpg_dragon_village_m_coupon_code.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_off0000d141.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD141 5496 bytes
SHA-256: f1ca1cb605f5b02603193afe6203f8bec4dc661ebbbbda80959cd0c936a9c64b
font_01_sfnt_off0000e3ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3EE 10696 bytes
SHA-256: 2827c270220775fce8086256ca858c711d07b2e2b2f9ada1e5f8d25e28f34eec

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