Malicious PDF — malware analysis report

Static analysis result for SHA-256 690770eae11ffcc5…

MALICIOUS

PDF

49.4 KB Created: 2020-10-26 02:51:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: 8d164f7b71327db6d589d789f40f9dab SHA-1: eb1f7c8fadff4c7aa022a21c64b8cfd2e4ecb4eb SHA-256: 690770eae11ffcc577deaa0b84eac5f78f18d64863254cbaf2132914053a102d
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/aws?keyword=vedas+in+sanskrit+with+english+translation+pdf In PDF document text
    • https://sonuboguf.weebly.com/uploads/1/3/4/3/134310015/ad2ec21.pdfIn PDF document text
    • https://soxupewo.weebly.com/uploads/1/3/4/3/134392520/zozazavab.pdfIn PDF document text
    • https://gatilavim.weebly.com/uploads/1/3/4/3/134391542/60b8066a9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365575/normal_5f8c196ab8e64.pdfIn PDF document text
    • https://wefamojugibe.weebly.com/uploads/1/3/1/1/131164519/zuzuw-gavodokev-sanijalunupotij-pixetu.pdfIn PDF document text
    • https://paripipedaninez.weebly.com/uploads/1/3/4/4/134444050/risoj_fudaj.pdfIn PDF document text
    • https://nikuwexipamojag.weebly.com/uploads/1/3/0/8/130813731/ee9685698f5e92.pdfIn PDF document text
    • https://fotejisatowonu.weebly.com/uploads/1/3/2/3/132302873/6701533.pdfIn PDF document text
    • https://ligetivegivug.weebly.com/uploads/1/3/4/0/134041815/wirowavutibavo.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/1/0481/6545/3975/files/48020592964.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8845/4559/files/composite_figures_area_and_perimeter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6627/7534/files/treatment_guidelines_cushings_syndrome.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/8425/7724/files/bisefixiwafux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0394/4853/files/formato_606_descargar_2015.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/8105/5390/files/82539673210.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/0872/0547/files/motorola_baby_monitor_manual_mbp483.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2702/8375/files/dress_code_of_fbla.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/7297/8585/files/nursing_scholarships_nj_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/7248/3228/files/peugeot_307_service_manual_download.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_off000080e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80E3 5424 bytes
SHA-256: 4dfa387a11221688ad44cf4358d9d5aae36f39f34a577e300a48e147a7ea06ac
font_01_sfnt_off00009366.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9366 10756 bytes
SHA-256: 95ebe2b0a9c07f3d94029af1f54bd98e50bee23143b041618c1659338b2b0891

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