Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2578a78ec1c6604…

MALICIOUS

PDF

71.6 KB Created: 2020-12-28 12:34:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 0f1ce5730183893213821e8a0e210d5a SHA-1: 9395a85a756e49f325059ecbf3a2ec686c11abf9 SHA-256: e2578a78ec1c6604ae3db31e2bae46736c4947745d3ac56ce6c26239c6ab6c68
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 0.9997

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
  • 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://trafffe.ru/strik?utm_term=green+party+b.+c.+platform+2020 PDF link annotation
    • https://sedifuwenute.weebly.com/uploads/1/3/4/4/134464273/sugevidime.pdfIn PDF document text
    • https://bisimopax.weebly.com/uploads/1/3/0/8/130814127/8147176.pdfIn PDF document text
    • https://fisalusul.weebly.com/uploads/1/3/4/3/134341538/5887603.pdfIn PDF document text
    • https://jifofavara.weebly.com/uploads/1/3/4/6/134631997/jopit-kewojutila.pdfIn PDF document text
    • https://sijalafad.weebly.com/uploads/1/3/4/8/134887162/sodesiko_jerokofiw_makusideligifev.pdfIn PDF document text
    • https://tabikanopik.weebly.com/uploads/1/3/4/7/134705808/7181510.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/pomaxa/export_outlook_contacts_to_excel_sheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/24648979-595a-4a9e-94d7-53d49acb829c/52535083469.pdfIn PDF document text
    • https://s3.amazonaws.com/nevovumowa/fofabev.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/35d49672-ecd6-47de-bc58-91d2bb095a8e/galobimirasunosem.pdfIn PDF document text
    • https://s3.amazonaws.com/tudawufed/spinal_cord_injury_classification.pdfIn PDF document text
    • https://s3.amazonaws.com/vatakefojunib/20672500481.pdfIn PDF document text
    • https://s3.amazonaws.com/golepe/aromaticity_problems.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a51967b-09bb-4590-8d81-d407d5ff5a01/muwagelaxukin.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000de39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE39 5564 bytes
SHA-256: b33f2cf81b5a8bdc311e316ab320fd0ed600818e7a321f4e138c3a995181920f
font_01_sfnt_off0000f125.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF125 9544 bytes
SHA-256: 9b8aa47c338c3348a2381ca68aa8ee08dfd5e9843ae22bde4e5af85ef66f793a

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