Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6c352ddbbb58dec…

MALICIOUS

PDF

69.7 KB Created: 2020-11-14 21:32:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: e80516d2b4e3211634ec02e61bb51273 SHA-1: 005b5a83995877ec6b563c3b66a93b58fdf3bf82 SHA-256: d6c352ddbbb58decd33e0c9dd4d1e2173ea5e4bb35c7d7bda95cb50fbc6207a8
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a common tactic for link farms and phishing campaigns. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, and the ClamAV detection as 'Pdf.Phishing.Trojan' strongly suggests malicious intent. The embedded URL 'https://trafftec.ru/strik?utm_term=exemple+demande+d+emploi' likely serves as the initial lure, directing users to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://trafftec.ru/strik?utm_term=exemple+demande+d+emploi PDF link annotation
    • https://zeruxexo.weebly.com/uploads/1/3/4/3/134373455/e4d78a24c66e009.pdfIn PDF document text
    • https://tulovituvo.weebly.com/uploads/1/3/4/2/134234708/4190730.pdfIn PDF document text
    • https://ruxibero.weebly.com/uploads/1/3/4/4/134403554/wizifivezure-gazifan-kejagate-xigagularemil.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419836/normal_5f97e3877bf93.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446158/normal_5fa90ebd19528.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384851/normal_5fa198bf4c2f9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379363/normal_5fa9b43044571.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371495/normal_5fab147021d1d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369769/normal_5f8b2ba99e2cf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411700/normal_5f959412005d4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408864/normal_5faf99885eaca.pdfIn PDF document text
    • https://zejaxosadakawur.weebly.com/uploads/1/3/4/3/134372542/zukuxe_wubuvufip.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500183/normal_5faf5775c93bb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455390/normal_5fad404bc07c9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366336/normal_5f8f44ecbc122.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402956/normal_5fa0188c64085.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d379.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD379 4856 bytes
SHA-256: 271bc68499c2adcad3ad42664a4e454613ec5930ecb4fb47e3fcca3c8c5cb7ac
font_01_sfnt_off0000e3ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3EE 11984 bytes
SHA-256: 5dbda29b0ec3921d0f9c1ef5c2467da905225374d387507e5fb533faf4b8398e

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