Malicious PDF — malware analysis report

Static analysis result for SHA-256 d25ba5ac5a7243c0…

MALICIOUS

PDF

45.9 KB Created: 2020-11-07 05:57:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 03f5c97d2ba7310fde349a7bdf7a8fdc SHA-1: 096baa224a76025a888f0c97b1d659cb73f0ef2e SHA-256: d25ba5ac5a7243c0faf429ccfbf11100e090ce12af979df25dc45e6f02e140b3
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://traffmen.ru/123?keyword=playhouse+disney+website+2009 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4422382/normal_5f98c3fc997a5.pdfIn PDF document text
    • https://rikidunojig.weebly.com/uploads/1/3/4/4/134488605/3899190.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/ligewajinaxi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401712/normal_5f9f0600d4e23.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379046/normal_5fa4ba3ce5260.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409840/normal_5f93a719de066.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403689/normal_5fa615530cf3d.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/buxoparadazegu/phet_gas_properties_simulation_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/jaxesabi/movies_tv_series_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb4a2e97-5138-4d11-aefe-405c6daff602/santo_santo_santo_es_el_seor.pdfIn PDF document text
    • https://s3.amazonaws.com/donarepemi/pezowudizar.pdfIn PDF document text
    • https://s3.amazonaws.com/povodijirig/wakuzibamat.pdfIn PDF document text
    • https://s3.amazonaws.com/mibiwivanetuj/30262539636.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_off00007311.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7311 5580 bytes
SHA-256: 0cf21d0c8b85e8c2c8aef873f41013daa9a8bb467244890c948c9e390a655d43
font_01_sfnt_off00008611.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8611 11068 bytes
SHA-256: bb99a5099af8bdbc32ae7be3791392541a3f1f01429e3000a07c4dc5d31c5c57