Malicious PDF — malware analysis report

Static analysis result for SHA-256 68927e2d6d1ffdcc…

MALICIOUS

PDF

44.6 KB Created: 2020-10-02 11:04:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 8d6dd960437dd0cdddd4b62bac56d647 SHA-1: 6702bbeb0818efc19b644e7d1dee677bde921cfa SHA-256: 68927e2d6d1ffdccb080822dd796cb2d22971f7939f109346feb6e45317bef7d
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ggtraff.ru/strik?keyword=google+images+reverse+android In PDF document text
    • http://files.takingtheleadmedia.com/uploads/1/3/2/6/132683334/tetibe.pdfIn PDF document text
    • http://files.alabamamidwivesalliance.org/uploads/1/3/0/7/130776525/rigavixijuno.pdfIn PDF document text
    • http://matuxutiw.rmflmedan.com/uploads/1/3/1/8/131855997/nejanobadoliwiv.pdfIn PDF document text
    • http://files.theacclamationchorale.com/uploads/1/3/0/9/130969826/sapidikol-ditalobibokir-padoxabuz-nuwuzaxovuke.pdfIn PDF document text
    • https://site-1037071.mozfiles.com/files/1037071/4593789631.pdfIn PDF document text
    • https://site-1038590.mozfiles.com/files/1038590/78091807272.pdfIn PDF document text
    • https://site-1037011.mozfiles.com/files/1037011/sidasipoberob.pdfIn PDF document text
    • https://site-1040764.mozfiles.com/files/1040764/jisitugeniguvuf.pdfIn PDF document text
    • http://files.splendoraband.com/uploads/1/3/1/1/131163695/xesekep.pdfIn PDF document text
    • http://files.officesupercharger.com/uploads/1/3/2/3/132303079/9098626.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/1033/9228/files/1_john_2_study_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3103/5032/files/89255016203.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5085/9670/files/world_geography_study_guide_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1002/1787/files/weber_spirit_200_side_controls.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4504/4892/files/thermal_expansion_worksheet_introduction_to_physics.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_off00007164.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7164 5236 bytes
SHA-256: e9bb4111e63f395996ba988342f8f0849b31663c8346de89cddf337680de3fce
font_01_sfnt_off00008324.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8324 10016 bytes
SHA-256: 5913705107715a794ff49eeaadabf528a3a34fd236f579a02684c15bd1c25b70

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