Malicious PDF — malware analysis report

Static analysis result for SHA-256 97d5aadf86a166a8…

MALICIOUS

PDF

66.7 KB Created: 2021-03-08 12:51:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 595b289d43afb4138b6c284ff359d3bd SHA-1: a6a43cd38efefef17b5eb6d7bb6d09e25bbee123 SHA-256: 97d5aadf86a166a8e1c25fc3c05c39055448431fca2e27964fa8dad13eddcec2
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://lozipotod.ru/award?keyword=us+army+nco+creed+pdf PDF link annotation
    • https://sazoxizifa.weebly.com/uploads/1/3/4/5/134505384/304c75a5835820b.pdfIn PDF document text
    • https://tavifarexup.weebly.com/uploads/1/3/4/6/134611028/90386b37.pdfIn PDF document text
    • https://cdn.sqhk.co/pawexedibib/auI8Wie/85863861434.pdfIn PDF document text
    • https://filofasifujutoz.weebly.com/uploads/1/3/0/8/130874575/7d1a2fd.pdfIn PDF document text
    • https://zexebige.weebly.com/uploads/1/3/0/8/130813378/9424544.pdfIn PDF document text
    • https://zotepuzexalebox.weebly.com/uploads/1/3/5/3/135397030/d27b29829.pdfIn PDF document text
    • https://cdn.sqhk.co/nugunexinazo/kgeiege/war_of_the_worlds_epix_review_imdb.pdfIn PDF document text
    • https://cdn.sqhk.co/wibetaxor/Bno7Dii/48379350089.pdfIn PDF document text
    • https://xifexovajebim.weebly.com/uploads/1/3/0/7/130740184/1346856.pdfIn PDF document text
    • https://cdn.sqhk.co/jubawiwa/eii3Lig/pipikejarewufofetuziw.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/kobivimelelo/22997176761.pdfIn PDF document text
    • https://s3.amazonaws.com/babetafaperaxov/napopinagigatiruluzipibi.pdfIn PDF document text
    • https://s3.amazonaws.com/juduk/mifejovibu.pdfIn PDF document text
    • https://s3.amazonaws.com/fuzafuzeruwit/are_they_making_a_4th_divergent_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/jevelel/52952462238.pdfIn PDF document text
    • https://s3.amazonaws.com/webipejonavuv/59504394413.pdfIn PDF document text
    • https://s3.amazonaws.com/fezenur/35149877572.pdfIn PDF document text
    • https://s3.amazonaws.com/zoxewudunigus/facebook_app_install.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_off0000ca37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA37 5360 bytes
SHA-256: 67f96992672458aca92ee4af9390b050c49a81ef7a07a5290758f438a0afcef0
font_01_sfnt_off0000dc68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC68 9824 bytes
SHA-256: 72f2926ca34a5e66e89e636980fd306852f116e0cc15f10484adf444bfc551d0

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