Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c2333457a1dbde4…

MALICIOUS

PDF

72.7 KB Created: 2021-02-27 22:53:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 3e8b97ee4adc9c51941ff6e3063b6824 SHA-1: 2bf65aa8d50a066f6dc97e1d8f2f663abed63f01 SHA-256: 5c2333457a1dbde42b90be164d1f10c8148d6127edcf02e1def9d59c395cb712
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://mezovuduw.ru/123?utm_term=1995+toyota+hiace+radio+wiring+diagram PDF link annotation
    • https://cdn.sqhk.co/vasibejovej/cgggj7t/70587551428.pdfIn PDF document text
    • https://bonujuvab.weebly.com/uploads/1/3/2/7/132740321/voburaluxiror.pdfIn PDF document text
    • https://cdn.sqhk.co/zalivelo/heY1iaK/57219934128.pdfIn PDF document text
    • https://nasabera.weebly.com/uploads/1/3/4/4/134447265/7804796.pdfIn PDF document text
    • https://viliwefat.weebly.com/uploads/1/3/1/0/131069961/7757898.pdfIn PDF document text
    • https://zojubexetiw.weebly.com/uploads/1/3/5/3/135316795/4679308cc.pdfIn PDF document text
    • https://cdn.sqhk.co/linewebozid/cRAdRgd/hexagone_france_figure_de_style.pdfIn PDF document text
    • https://xogiwudib.weebly.com/uploads/1/3/4/7/134715522/tawodojepawub.pdfIn PDF document text
    • http://momegitufog.22web.org/2573500473.pdfIn PDF document text
    • https://kagepejipewabo.weebly.com/uploads/1/3/4/8/134871264/256323d852.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nelarigutixus.rf.gd/tavebigedodadubiv.pdfIn PDF document text
    • https://s3.amazonaws.com/dudigonifu/61988813117.pdfIn PDF document text
    • https://s3.amazonaws.com/vuxagixil/organization_structure_powerpoint_template.pdfIn PDF document text
    • https://s3.amazonaws.com/jikopot/slack_machine_wide_installer.pdfIn PDF document text
    • https://s3.amazonaws.com/jutenojamega/aditya_birla_mutual_fund_nomination_form.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_off0000df16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF16 5572 bytes
SHA-256: 6206d09f60dd8a34286d54c3ce9b53f82c3af1c41ccdab63bcd43de5a529bc12
font_01_sfnt_off0000f206.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF206 10472 bytes
SHA-256: 69aa78ccad679d78126ff94fd76bc9979c98c0baeba4f6a1b67b90c9d7a93250