Malicious PDF — malware analysis report

Static analysis result for SHA-256 7af88aed1ea4f909…

MALICIOUS

PDF

70.9 KB Created: 2021-02-25 15:41:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: f52d41c3d3d5aa6f44ee378a58c00ac3 SHA-1: 396299588dbd44dbeefc79cf9201e796e374633d SHA-256: 7af88aed1ea4f90987c7de87a0258ed60ebbeee6c0906e87c6965ee6b9024150
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://druttle.ru/award?keyword=porter+cable+fn250b+rebuild+kit PDF link annotation
    • https://cdn.sqhk.co/tuwagezo/EiaPMOk/joxutederirog.pdfIn PDF document text
    • https://cdn.sqhk.co/pevedapev/7Ahhagm/geranomoruwumed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490125/normal_600e5bb53e2ba.pdfIn PDF document text
    • https://cdn.sqhk.co/fesakesovoka/cJGt78k/best_billionaire_romance_books_read_online.pdfIn PDF document text
    • http://buluzapigal.22web.org/what_is_the_theme_of_cinderella.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380379/normal_600bd71e9007b.pdfIn PDF document text
    • https://cdn.sqhk.co/furafurume/fhahhic/my_hair_salon_near_me.pdfIn PDF document text
    • http://movasolusid.iblogger.org/sopuvifiteza.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464700/normal_5ffa86d423800.pdfIn PDF document text
    • http://muzibatixabu.mypressonline.com/felidavenirokafulenipizo.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/fajetufekejo/6271294376.pdfIn PDF document text
    • https://s3.amazonaws.com/jemisajoda/difference_between_android_and_ios_app_design.pdfIn PDF document text
    • https://s3.amazonaws.com/xeroguru/canon_c300_mark_ii_footage.pdfIn PDF document text
    • https://s3.amazonaws.com/wovitiku/70112510508.pdfIn PDF document text
    • http://romuwoturifitam.epizy.com/retinopatia_hipertensiva_oftalmologia.pdfIn PDF document text
    • https://s3.amazonaws.com/baxegezivumi/homework_planner_template_excel.pdfIn PDF document text
    • https://s3.amazonaws.com/wizitifowubux/xuguwefimasapobonido.pdfIn PDF document text
    • https://s3.amazonaws.com/dazovosugev/2169070548.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_off0000d6d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6D4 5440 bytes
SHA-256: 7ca7b11f4fa8fa91b8b1195c706c937a96b328d04051f5285bae1ee0997007ef
font_01_sfnt_off0000e96a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE96A 10284 bytes
SHA-256: 4541191543e7f7675c893f60736be249dab773c2741a7d2c55538e1ac977781a