Malicious PDF — malware analysis report

Static analysis result for SHA-256 6dc5f9b54ab3e2dc…

MALICIOUS

PDF

71.5 KB Created: 2021-02-21 09:50:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 478316b7c7d18716bb661d550f84d9e2 SHA-1: 318213dac6ca37969df99b305661c3155ba65107 SHA-256: 6dc5f9b54ab3e2dc64eaa770ef5274bc6dd5f67e4ffcc7d0d87944375e36f939
136 Risk Score

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
  • 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://leonvi.ru/strik?utm_term=what+colours+do+dachshunds+come+in PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4417138/normal_5fe94cea8f207.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380674/normal_600fc8fa14f25.pdfIn PDF document text
    • https://cdn.sqhk.co/kawiwitifa/3zmchda/centurylink_outage_pagosa_springs_co.pdfIn PDF document text
    • https://cdn.sqhk.co/zezoxomop/BhhWa3O/91253751407.pdfIn PDF document text
    • https://cdn.sqhk.co/zivuronufepu/g6gih81/segodizerobuwigofosabunat.pdfIn PDF document text
    • https://cdn.sqhk.co/wesebewoweva/fgfsDif/kexaruwawabuza.pdfIn PDF document text
    • https://cdn.sqhk.co/lituxopevuk/VjjggoP/8211387537.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475852/normal_602874d72d561.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389095/normal_601cc35071aa1.pdfIn PDF document text
    • http://jusuzabajalaz.22web.org/49621593867.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489713/normal_602f1915c4751.pdfIn PDF document text
    • https://cdn.sqhk.co/xawobovuji/V2giidp/56523906876.pdfIn PDF document text
    • https://cdn.sqhk.co/tekonunise/s96nih2/delete_background_apps_iphone_11.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/fifuto/wutijudidivufufodisemepe.pdfIn PDF document text
    • https://s3.amazonaws.com/numegubowalonan/tubekotanerubaren.pdfIn PDF document text
    • https://s3.amazonaws.com/rurosaveruk/60876620207.pdfIn PDF document text
    • http://lowadof.epizy.com/fidic_2017_practical_guide.pdfIn PDF document text
    • http://bejopirobi.epizy.com/bokomonobu.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_off0000dbdc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBDC 5192 bytes
SHA-256: 9a7050e3342cd59330bd61eaba50dd701d65e0b9233c81077923061df288c2de
font_01_sfnt_off0000ed63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED63 10376 bytes
SHA-256: ee967102f65acc7f3116941df3a4699d2c73d519994cd28cb91eac9e35008ec6