Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4076f5a84284e2a…

MALICIOUS

PDF

64.9 KB Created: 2020-11-25 22:43:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 2adbd2e2c321660c4e1a32d51eaaf1c0 SHA-1: de990df29628323729aa8a2b5a9d0d2fe27d0713 SHA-256: d4076f5a84284e2a5f8ac02f59f565a92add66ac8748eb27f81492fbd392385b
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-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://traffking.ru/strik?utm_term=xmtv+player+apk+latest+version PDF link annotation
    • https://xoraxabaxid.weebly.com/uploads/1/3/2/6/132682630/fbbd82b72.pdfIn PDF document text
    • https://vozexipazaxa.weebly.com/uploads/1/3/4/4/134444785/gusatevepope.pdfIn PDF document text
    • https://xumuxurubaxuk.weebly.com/uploads/1/3/4/5/134501003/489268.pdfIn PDF document text
    • https://pokezivakizame.weebly.com/uploads/1/3/4/6/134619377/tepekot_gosagori_bobedofijuwiziv.pdfIn PDF document text
    • https://tavumake.weebly.com/uploads/1/3/2/7/132740551/263184.pdfIn PDF document text
    • https://jemajodelevo.weebly.com/uploads/1/3/4/3/134394711/reviliriletis.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/d5acbd05-ac77-45fa-aec4-180ae4c7999c/cbt_thought_record.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0da8322-6534-428e-9110-cb4bd710de41/vituwevapexugu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ee3c292-ff3a-4ae7-80b1-d8c2db209a48/50141238266.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb60dbd9-5fe8-4265-977a-805d5f22edd3/45673207534.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18f0ff2e-d268-49d5-a893-6a8b1d550e3e/59895312770.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0684849d-5fa2-4880-9c18-70713acc6890/13225605924.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a05b385b-9ea9-4d67-ac20-242e22987f0e/maya_buddhism_definition.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_off0000bfd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFD6 5168 bytes
SHA-256: 39d319c225f2880806a607937b1074417dd43b28aaffa990a5e4eb9faa14876e
font_01_sfnt_off0000d15c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD15C 11052 bytes
SHA-256: 71e7d094f488cf9cf6d84eb43f7b874d98d0065fd66e762fb27bdeaa83acd1d7

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