Malicious PDF — malware analysis report

Static analysis result for SHA-256 3418129369fe1185…

MALICIOUS

PDF

72.6 KB Created: 2020-11-23 17:41:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 4d65a7c9d064d2746694d02f711d57ec SHA-1: b9c11a18c40696de00a7809032b51959b8c901f3 SHA-256: 3418129369fe11852485091cfd55a0e9e178e16918edbe8e31acd108550317bf
214 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous embedded links, with critical heuristics indicating it functions as a malicious redirector and a link farm. The primary malicious URL identified is 'https://traffmen.ru/123?utm_term=watch+venom+online+amazon', which is likely used to redirect users to further malicious sites. The ClamAV detection and ML classifier further support its malicious nature, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://traffmen.ru/123?utm_term=watch+venom+online+amazon In PDF document text
    • https://jukafubu.weebly.com/uploads/1/3/0/8/130874261/novabe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465545/normal_5fa773025cb1b.pdfIn PDF document text
    • https://mixorone.weebly.com/uploads/1/3/1/4/131438240/winetonaxiwowav.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/1392291.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380082/normal_5f9fac43e3e7d.pdfIn PDF document text
    • https://vuvofazomegudej.weebly.com/uploads/1/3/4/3/134329778/6900697.pdfIn PDF document text
    • https://gebaxugore.weebly.com/uploads/1/3/4/5/134594027/c5b9e.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/zupenafud/pagitarugusij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5cf25e19-2cb5-4566-b0be-5c6b1c09a38f/30607104954.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d290556-5cbf-4a80-bccc-7f08edb2210e/69816213186.pdfIn PDF document text
    • https://s3.amazonaws.com/zuponefi/gepalisegexesexenujo.pdfIn PDF document text
    • https://s3.amazonaws.com/dutuzanob/bulldog_cafe_lapel.pdfIn PDF document text
    • https://s3.amazonaws.com/xipavir/real_estate_director_abuelos.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/barivaladodibumadipebov.pdfIn PDF document text
    • https://s3.amazonaws.com/mexesazaxasa/jumamumujatumapepivovubu.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d46f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD46F 4888 bytes
SHA-256: 65564c78f38750a4633dfbdc3c338d60798c88dd7ffbe60b10effa591d9ed67b
font_01_sfnt_off0000e500.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE500 3720 bytes
SHA-256: 6539b129c5cd894636dc8f40f53a156c00c8f46378ab4f137c96d687a1cff6ed
font_02_sfnt_off0000f063.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF063 10628 bytes
SHA-256: 4b593a46d3abfb46187abda799436da3cb0ced4435dc3735048394780e023f1c

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