Malicious PDF — malware analysis report

Static analysis result for SHA-256 76f23cccf50da2d0…

MALICIOUS

PDF

69.5 KB Created: 2020-12-26 15:40:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 091e01dc6c389260069078ab672b7cae SHA-1: 8a44f336a8ec8325d0f5c8695c1d39a9186b94a4 SHA-256: 76f23cccf50da2d0a49ff7441a4d7ef24e497c014bbbd8865a07ecb6b2a13ba5
156 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by multiple heuristics and a machine learning classifier, indicating a high likelihood of malicious intent. The PDF contains a large number of external links, suggesting a link farm or phishing operation. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a phishing or malicious redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafftec.ru/strik?utm_term=black+baby+boy+hairstyles+braids PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4367005/normal_5fb30afe06c20.pdfIn PDF document text
    • https://difekubo.weebly.com/uploads/1/3/4/7/134714923/viwiwat-difaboweviwav-fojuwezuronudo-wifofibikix.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369146/normal_5f8896006b455.pdfIn PDF document text
    • https://cdn.sqhk.co/nupegefozub/fgf6U1K/zilivokowazabajatisu.pdfIn PDF document text
    • https://tazerodine.weebly.com/uploads/1/3/4/5/134598813/zosaseguromi_tawevorexirebo.pdfIn PDF document text
    • https://zezujigodet.weebly.com/uploads/1/3/4/0/134012897/dosuxepujimezejoviwe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477892/normal_5fbd07975ff60.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379385/normal_5f966fd72e4f2.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/gazivemon/fawib.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/curriculum_vitae_format_sri_lanka.pdfIn PDF document text
    • https://s3.amazonaws.com/wivunonovef/cbse_guidelines_for_class_10_students.pdfIn PDF document text
    • https://s3.amazonaws.com/pukiza/gedad.pdfIn PDF document text
    • https://s3.amazonaws.com/divikufifir/fiesta_st_manual_transmission.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_off0000d48c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD48C 5384 bytes
SHA-256: e1b48d4ae395714ec0fba83b651423cdb1a60b1fb92bd6165d93746b0e867bf5
font_01_sfnt_off0000e6d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6D2 10316 bytes
SHA-256: 67321e5f530e6b35571a8834e6e8d6c14af0b6e452305feab4e1c0347b54387b

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