Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1d1d4f94e3e4b39…

MALICIOUS

PDF

71.7 KB Created: 2021-02-06 05:41:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: 86656992090cdb727b98accb20a74a05 SHA-1: 7d8ec8c2cdb9770582394ed7a9ea7b1f9329abec SHA-256: e1d1d4f94e3e4b3928fd0ccaaa894d2ee2879dae03f986270edd45f78648a008
194 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
  • 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://yafferge.ru/wb?keyword=parent%20pay%20activation%20guide In PDF document text
    • http://timelessdecorum.com/25866536610ev6bg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476421/normal_600a451215365.pdfIn PDF document text
    • http://contact-git.top/22610455828h45qr.pdfIn PDF document text
    • http://form-lnstagramcopyrightservice.com/beautiful_girl_michael_jacksontxuti.pdfIn PDF document text
    • http://teaitalis.space/zipikawajepigozevopalvf38.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420907/normal_5fe4e1e323da2.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/patotale/avira_antivirus_pro_apk_full.pdfIn PDF document text
    • https://s3.amazonaws.com/bomifabipi/13446898879.pdfIn PDF document text
    • https://s3.amazonaws.com/dixaleko/mega_blastoise_x_and_y_forms.pdfIn PDF document text
    • https://s3.amazonaws.com/sosupejuxofedo/wulinevexaxeropelatalusa.pdfIn PDF document text
    • https://s3.amazonaws.com/toguvaju/bootstrap_css_and_js_free.pdfIn PDF document text
    • https://s3.amazonaws.com/jemazejodep/free_battleship_powerpoint_template.pdfIn PDF document text
    • https://s3.amazonaws.com/rivazixexuguri/another_word_for_automated_answering_machine.pdfIn PDF document text
    • https://s3.amazonaws.com/tesapibebujep/jezaloretabaju.pdfIn PDF document text
    • https://s3.amazonaws.com/fusopoxipo/bill_of_sale_form_car_oklahoma.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_off0000dc9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC9C 5196 bytes
SHA-256: 703de3fc6387c0d15bacf04a9f61e776df939ea91d47defca8d90b9094602ddd
font_01_sfnt_off0000ee68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE68 10476 bytes
SHA-256: d0583afd776f3af00f1dac5eb9047386daaffe38187bc4789950414196a74b64