Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d3cd1e6cfea343a…

MALICIOUS

PDF

70.2 KB Created: 2021-02-20 09:20:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: db1b5de9fe635d39ae77b1bb6aec37bb SHA-1: eb45a5423985fe543841a192015ff3483990776b SHA-256: 3d3cd1e6cfea343ac0e4341fd946421ee3c890a8a8ca4c1084b4f61870b2499f
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://baarspo.ru/wix?keyword=video+ports+on+motherboard+not+working PDF link annotation
    • http://circulyarkadigital.xyz/certificate_of_residenced9cmg.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459166/normal_5ff0cc40bb932.pdfIn PDF document text
    • http://bosnoslovnoejelaniekupit.xyz/n_deklination_bungv6qzi.pdfIn PDF document text
    • https://penogefuf.weebly.com/uploads/1/3/2/7/132740618/20828919c.pdfIn PDF document text
    • https://xewulowew.weebly.com/uploads/1/3/4/7/134757629/firefil.pdfIn PDF document text
    • https://fiwujewi.weebly.com/uploads/1/3/0/9/130969997/soxazozeso.pdfIn PDF document text
    • https://kerumeso.weebly.com/uploads/1/3/4/6/134641164/dbe74.pdfIn PDF document text
    • https://mujiborabasovu.weebly.com/uploads/1/3/4/5/134590634/gapuvo.pdfIn PDF document text
    • http://xrootunited.com/kuzikaf07sx.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366645/normal_602ed8f358dab.pdfIn PDF document text
    • http://osmosiotzs.fun/sinuvusisanovisixl7atp.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/mamibis/checking_system_information.pdfIn PDF document text
    • https://s3.amazonaws.com/jedadokuti/jinimejipogebujiku.pdfIn PDF document text
    • https://s3.amazonaws.com/kujesulad/annotate_surface_pro_pen.pdfIn PDF document text
    • https://s3.amazonaws.com/faduxodiwo/61995425513.pdfIn PDF document text
    • https://s3.amazonaws.com/gadumagabusodel/47536557755.pdfIn PDF document text
    • https://s3.amazonaws.com/firigugixujotov/spirit_airlines_flight_information_today.pdfIn PDF document text
    • https://s3.amazonaws.com/bakoloj/caparazon_formado_por_placas.pdfIn PDF document text
    • https://s3.amazonaws.com/tarajix/lewuwomidirawokipujowute.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_off0000d5aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5AA 5600 bytes
SHA-256: 2e5cfc804774fd865bbd5ea7841c1afb6f2b941836b3f30facf7bf1e8d7cc839
font_01_sfnt_off0000e89c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE89C 10128 bytes
SHA-256: 7dc739f32bbfb6fa627bcec8855e31d688cfb14b1098e5ddc407eaf6e5d10abe

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