Malicious PDF — malware analysis report

Static analysis result for SHA-256 237f37aa0a16d1ca…

MALICIOUS

PDF

64.8 KB Created: 2021-02-28 01:39:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 7b825b8ff34bf4a3764dcf1da73bc915 SHA-1: 7f2a209ba23df655da6be2d17a88012fb0be3c6a SHA-256: 237f37aa0a16d1ca6cc90fa42b374245c1dc82fbdf53d51aedf916b48312a982
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://druttle.ru/wb?keyword=frozen%20meals%20that%20are%20gluten%20free%20and%20dairy%20free PDF link annotation
    • http://tuderoba.getenjoyment.net/letra_del_himno_nacional_mexicano_escolar.pdfIn PDF document text
    • http://lubenoredeji.mypressonline.com/management_of_grief_mukherjee.pdfIn PDF document text
    • http://bozigojinodebux.iblogger.org/multivariate_data_analysis_hair_2006.pdfIn PDF document text
    • http://hh666o.site/integrative_literature_review_definitionspdzd.pdfIn PDF document text
    • http://kixurox.getenjoyment.net/lozosipu.pdfIn PDF document text
    • http://gratoramaa.space/2020_porsche_cayman_owners_manualar6au.pdfIn PDF document text
    • http://zememor.sportsontheweb.net/sowazuk.pdfIn PDF document text
    • http://rajedat.iblogger.org/peseri.pdfIn PDF document text
    • http://puvepum.getenjoyment.net/wofupanufegorusidagufozi.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/dobesogum/35375139356.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabom/dizunixanevusewuri.pdfIn PDF document text
    • https://s3.amazonaws.com/lofese/bc_spca_adoption_form.pdfIn PDF document text
    • https://s3.amazonaws.com/tizowodifi/4776190085.pdfIn PDF document text
    • http://goguvero.epizy.com/22726648346.pdfIn PDF document text
    • http://bitiwumit.rf.gd/42839266692.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_off0000c2df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2DF 5428 bytes
SHA-256: 77f4ceb20baf0deb0e3410e2bd41e25125b23914a623e09a52c86b33efe513a2
font_01_sfnt_off0000d538.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD538 9568 bytes
SHA-256: 9eee7ca7b4735ca1e358cda7d3f64be9956bd0d0f5cf8734645b6341f9d98963