Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1e0193da3c89f5c…

MALICIOUS

PDF

71.8 KB Created: 2021-02-27 07:56:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: bdbb6aa0a7852f7cf8b6dcbd384049b6 SHA-1: 5685f7726386146cd12f0734f026a874332d709c SHA-256: b1e0193da3c89f5c264d0e9ab0c1f4f58bf4290e1e46451a9570d9a19d1a0648
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://resalured.ru/award?keyword=hp+officejet+pro+8620+ink+cartridges PDF link annotation
    • https://cdn.sqhk.co/mevojazix/ajihjGp/simple_male_hairstyles_drawing.pdfIn PDF document text
    • http://gejesixave.scienceontheweb.net/miremofuvukadi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417312/normal_6025a235a05a8.pdfIn PDF document text
    • http://lajodibibodi.getenjoyment.net/zofagoreminijedivox.pdfIn PDF document text
    • http://barajofa.mywebcommunity.org/under_the_dome_season_3_episode_4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476930/normal_5ff757d11bea4.pdfIn PDF document text
    • https://cdn.sqhk.co/letojeka/9hciggi/xajuloj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443824/normal_600f3bae57143.pdfIn PDF document text
    • http://goligofalu.medianewsonline.com/how_to_reset_honeywell_4000_thermostat.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384463/normal_5ff2d19397d52.pdfIn PDF document text
    • http://zizodoroluxonaf.sportsontheweb.net/95576402915.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404983/normal_5fca2f83daf5e.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/dowavelaxam/grief_therapy_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/vufuzewasi/first_or_second_b_notice_form.pdfIn PDF document text
    • https://s3.amazonaws.com/gifojuxaxeva/estimation_costing_and_valuation_textbook.pdfIn PDF document text
    • http://sidepojedava.myartsonline.com/32644251596.pdfIn PDF document text
    • https://s3.amazonaws.com/rubidokezive/how_to_put_together_a_wahl_hair_clipper.pdfIn PDF document text
    • https://s3.amazonaws.com/ribowexulo/formel_for_areal_av_sirkelsegment.pdfIn PDF document text
    • https://s3.amazonaws.com/regufojalojaza/8366838122.pdfIn PDF document text
    • http://gurabagoderes.atwebpages.com/sigma_1009_sts_manuale_italiano.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_off0000d7a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7A8 6016 bytes
SHA-256: 9617f084345369703c104a9ca6361e732b5e17703d01f5ef5243adbf2eb5b66a
font_01_sfnt_off0000ec3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC3A 10900 bytes
SHA-256: 089f32fd597d15a4dd297f2c8357cc35994798075040f51fd3c3d45cd1bdbe08

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