Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7a259560bb208d4…

MALICIOUS

PDF

72.5 KB Created: 2021-02-25 07:37:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: ba47262766afd271a91b8e489dcdf6db SHA-1: f894c600cba38382235ab0d8e897ec2919411878 SHA-256: d7a259560bb208d45c2fa4c32baf26569def4aaa2c669d7f88a2ec45869414d9
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wix?keyword=download+apk+root+android In PDF document text
    • http://alexandreablog.com/medical_mnemonics_mohd_farookzoqjm.pdfIn PDF document text
    • http://yesstore.pro/difference_between_grounded_theory_and_phenomenological_researchhdq9i.pdfIn PDF document text
    • http://bcipreactivaperu.com/college_student_interest_surveylf60y.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502817/normal_5fca4b80f2a03.pdfIn PDF document text
    • https://legelopupusida.weebly.com/uploads/1/3/4/3/134350366/2067294.pdfIn PDF document text
    • http://zutobemomej.22web.org/hp_8610_missing_or_failed_printhead_error.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369498/normal_60223b3070060.pdfIn PDF document text
    • http://hook-up.fun/bojajezitanozewopffalf.pdfIn PDF document text
    • https://tojawejememu.weebly.com/uploads/1/3/2/6/132682640/benejaxexesijitugif.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489402/normal_600907c2cb220.pdfIn PDF document text
    • http://udilische.club/descargar_formato_de_nmina_en_excel_gratis_mxico_2020y8q8u.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jixegovezawez.rf.gd/yamaha_704_remote_control_cable_replacement.pdfIn PDF document text
    • https://s3.amazonaws.com/peveziwoguxuzam/bheja_fry_2_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/tozaduliwubega/circle_arc_length_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/zuniverijesud/bengal_tiger_movie_filmywap.pdfIn PDF document text
    • https://s3.amazonaws.com/zuponefi/40233397565.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_off0000e121.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE121 4928 bytes
SHA-256: c27a192284fe4cb266e4320edf5c1cd97d548826f284c415878a83d99bdc9aef
font_01_sfnt_off0000f212.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF212 10240 bytes
SHA-256: dcad2c25c2162610a8a0c569417cb0e18ebbec7896c8f2900be13bdc0a48e72e