Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb9eb866abff48a0…

MALICIOUS

PDF

92.1 KB Created: 2020-12-27 07:39:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 29e85a70ac52b9a0eba908fd32274861 SHA-1: 90b29ab3d1ca8dd2cae8f66d90b9b78243bc2eda SHA-256: eb9eb866abff48a08a9fd1afb25468f1d947b2b9fb847b35c762393f84c7b438
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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://traffine.ru/strik?utm_term=free+online+graphic+design+software+canva PDF link annotation
    • https://rusokupos.weebly.com/uploads/1/3/4/4/134468665/3386939.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421038/normal_5fb54e5dddbe1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381529/normal_5f90780b041a3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427104/normal_5fb8b818928ea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475992/normal_5fa56c960e866.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380393/normal_5fd063308a5d6.pdfIn PDF document text
    • https://cdn.sqhk.co/nerutamar/7jbjiig/83268498323.pdfIn PDF document text
    • https://wobafedufuj.weebly.com/uploads/1/3/4/0/134012960/d82523850a066.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/bokofapig/68367275192.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe2f8f9c-2f38-45ab-ae70-38c39b543df9/disability_attorney_gresham_or.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c0da282-51d1-481c-9fdf-10a1cbe46721/wiluwuzaviraj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ff0aa09-89b9-454a-8953-09ed06bc6469/66528365386.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0a8e406-5331-400a-aa70-e1e0afb51a62/79226431566.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f9ebc5d-06a9-45eb-bc0e-9b2c568a1f94/bosusofawafaxiw.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_off00012a7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A7D 5524 bytes
SHA-256: 4da7defe001f5e7ee86b2a40f72d5beb89eb1d0a6df3e23362b6689b6349c4e6
font_01_sfnt_off00013d5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D5C 11092 bytes
SHA-256: 669feabf3ea99b3429eff981db8a548b15a903693bf811662751fbc7ae9a4a87

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