Malicious PDF — malware analysis report

Static analysis result for SHA-256 e540c966ddba03fd…

MALICIOUS

PDF

65.8 KB Created: 2020-11-14 10:05:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 73518ad9e6ec5c4df0d1377b5f252ef8 SHA-1: 900f60d8e1b5a6ff71e211150040b4f1cabc265f SHA-256: e540c966ddba03fd3bee1c89c135217d9271c8f29457a6462ff5e716d1c363aa
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains heuristics indicating it is a phishing lure, specifically using 'Quasar air conditioners reviews' as a pretext. It redirects to a malicious URL, traffnew.ru, which is likely part of a phishing campaign. The ML classifier and ClamAV detection strongly support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://traffnew.ru/123?utm_term=quasar+air+conditioners+reviews PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/77cc1052-37d8-4b9f-beb2-c266ba0799f0/construction_office_manager_job_description_for_resume.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/977a8774-aa40-4985-9a29-c050f4d6817b/66728576501.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb9ca09f-f5e6-4c5a-a2e6-8d60c2ce82a0/abdos_femme_enceinte.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2545768e-b65b-4f77-9345-ae98319232d8/99639716423.pdfIn PDF document text
    • https://s3.amazonaws.com/panalipolifod/galidujosozipisuf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b1ff6969-50ce-43b5-830f-3badc5550867/receta_de_salsa_de_Neptuno_de_pollo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50b5ab2d-2335-438e-b1d0-afc93b748b28/joxogufuz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5bc0ca70-27e5-4316-b8b7-728425cc1b8e/gisaluwotaguwikazuwomivux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/671e0486-2d15-4262-9ca2-c8a2009990ad/texas_medicaid_provider_manual_2018.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 1

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_off0000c593.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC593 5112 bytes
SHA-256: 39d63aad1d04816acd67cbe241757fa1528888043aacbfac63001600b0fdb0e9
font_01_sfnt_off0000d715.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD715 10548 bytes
SHA-256: bfee50d6b90439963265704e4f15fd4c5c0793dc84338c4f0cdf00f6f3ea89b0

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