Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e368c0b5a4c056e…

MALICIOUS

PDF

65.0 KB Created: 2020-12-26 22:16:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: aa87fb5966b719066055e4f3e0734e2a SHA-1: 97c3daacc13149fb2e0da4e30785c41e2f1bf4c8 SHA-256: 8e368c0b5a4c056ecd2d4b90633873cb7e00252ba816f158fb74e5e23b978ced
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It contains a large number of external links, indicating a link farm or phishing attempt. The presence of embedded URLs and the overall structure suggest it is intended to redirect users to potentially harmful external sites.

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
  • 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://trafffi.ru/strik?utm_term=lego+elves+dragon+sets PDF link annotation
    • https://gabofulonu.weebly.com/uploads/1/3/4/7/134730366/2e17f.pdfIn PDF document text
    • https://naxesitigas.weebly.com/uploads/1/3/0/7/130740165/tixefosa-gepuxofidemim-tejitexepiva.pdfIn PDF document text
    • https://cdn.sqhk.co/tumozaraf/TFZqxT8/vlad_a4_fake_call_pranks.pdfIn PDF document text
    • https://mulodunewumil.weebly.com/uploads/1/3/4/3/134314444/5438291.pdfIn PDF document text
    • https://guxadudupis.weebly.com/uploads/1/3/4/7/134751999/ec004d883.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ee983f1-a233-40c9-89a1-e054e53a3850/97737595056.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/xepolonugoporezuniz.pdfIn PDF document text
    • https://s3.amazonaws.com/potofaw/whisky_flavour_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7bf7703c-356b-4997-a964-e542e2f5ec56/salt_and_sanctuary_best_spells.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e102d64-fb08-4fd4-abb9-1368d9eae28f/61830977097.pdfIn PDF document text
    • https://s3.amazonaws.com/tedowafomaru/64516721723.pdfIn PDF document text
    • https://s3.amazonaws.com/xubifupi/vcenter_6._5_file_from_datastore.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_off0000c3b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3B6 4992 bytes
SHA-256: 2bcba1a160681704e599cf7e2f978bd450efe9b92af0a6e5193e3a9fbeb95e87
font_01_sfnt_off0000d4c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4C7 10184 bytes
SHA-256: 1179f7ffe84f58617c6247c040c4944c94f28efe1fea24dfe521f53e14640dc8

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