Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c40f46e67100c88…

MALICIOUS

PDF

62.9 KB Created: 2021-02-20 11:18:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: d77d6fa0d149684085daca1219e84dc4 SHA-1: 8926f16d6a2c4dd8036cfbd3e55ec1f8d4c0ed2f SHA-256: 0c40f46e67100c88361b0729306c1f457f69d423a837cba132d876e131019eb4
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://druttle.ru/wix?keyword=rain+bird+sst600i+manual PDF link annotation
    • http://revershjtb.site/1973_fender_twin_reverb_for_salekyd75.pdfIn PDF document text
    • http://copyright-securityx.com/average_speed_of_nascar_driverwmkhc.pdfIn PDF document text
    • http://olx-delivery.cc/tovubozavekofivavopox10jnb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444369/normal_5ff0193a654aa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366339/normal_5fcd071e69623.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366302/normal_602994af37cfc.pdfIn PDF document text
    • http://metazoaapc.fun/rijexawiripititakukupup6oph9.pdfIn PDF document text
    • https://womovenurobo.weebly.com/uploads/1/3/1/8/131872055/duvaz.pdfIn PDF document text
    • http://greyfruit.space/candy_garden_legend_apkj1qqf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473622/normal_600c46dfc07e1.pdfIn PDF document text
    • https://fojexoduzasob.weebly.com/uploads/1/3/4/6/134693365/6749290.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475382/normal_5fe8322c26a5a.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/divikufifir/coefficient_of_linear_expansion_experiment_lab_report.pdfIn PDF document text
    • https://s3.amazonaws.com/sefiwegegagu/cours_gratuit_rapprochement_bancaire.pdfIn PDF document text
    • https://s3.amazonaws.com/vatosolikijike/81105144981.pdfIn PDF document text
    • https://s3.amazonaws.com/pegek/4719755920.pdfIn PDF document text
    • https://s3.amazonaws.com/xiwevitox/allied_telesis_software.pdfIn PDF document text
    • https://s3.amazonaws.com/xonobijikivo/12526745104.pdfIn PDF document text
    • https://s3.amazonaws.com/bovenotojitowe/free_simple_admin_template_bootstrap_4.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_off0000bb27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB27 5412 bytes
SHA-256: 7990ff3be996b99a2c6c69e618a83945cfbd4430149a93b0cd9b6f913dede070
font_01_sfnt_off0000cd70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD70 9688 bytes
SHA-256: dbfedf0244ddb805d5e7a048bc0c2836717c8bc0bc1860a54ec030ecd6698b56

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