Malicious PDF — malware analysis report

Static analysis result for SHA-256 6546684a145573fc…

MALICIOUS

PDF

42.7 KB Created: 2020-10-07 23:02:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 30e7e5562323ab90e849483469896264 SHA-1: a913ca0780616d8da8f11b21401fd1b574e296f3 SHA-256: 6546684a145573fc5200d4e8d3f4e0376f07107f9e3092eac08811d655c3a693
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://cctraff.ru/pify?keyword=garbage+disposal+switch+on+counter In PDF document text
    • http://lezizo.maranathabiblens.com/uploads/1/3/0/7/130776132/4893919.pdfIn PDF document text
    • http://files.montgomery-chamber-music.org/uploads/1/3/2/6/132681325/1565923.pdfIn PDF document text
    • http://zojanop.dedethford.com/uploads/1/3/1/4/131410399/444bc6cce2.pdfIn PDF document text
    • http://files.campbornthisway.org/uploads/1/3/1/4/131483069/f266706.pdfIn PDF document text
    • https://site-1039290.mozfiles.com/files/1039290/gadetawu.pdfIn PDF document text
    • https://site-1048453.mozfiles.com/files/1048453/banetifunagobazu.pdfIn PDF document text
    • https://site-1039487.mozfiles.com/files/1039487/29088930329.pdfIn PDF document text
    • https://site-1037057.mozfiles.com/files/1037057/10842250634.pdfIn PDF document text
    • https://site-1036840.mozfiles.com/files/1036840/68652706673.pdfIn PDF document text
    • http://files.compro-it.co.nz/uploads/1/3/1/4/131438899/zabalex.pdfIn PDF document text
    • http://files.warehouseonthecanal.com/uploads/1/3/1/4/131452938/ce6f3b6b0e14.pdfIn PDF document text
    • http://files.altitudeluxurytravel.com/uploads/1/3/1/0/131070712/6322a995bc.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/1/0499/8109/6096/files/where_is_832_area_code_in_new_york.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/9124/2397/files/lexemimofuzemamirevisi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8326/0314/files/66568498093.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2080/4511/files/information_technology_project_management_salary.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_off00006928.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6928 5596 bytes
SHA-256: 30b34d2006b233e38f363fbf44f14936fcdd9794fa15a23516c36538440458ef
font_01_sfnt_off00007c33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C33 9968 bytes
SHA-256: 86bbf5e161926b69162af95065154a777c0e9944f30ba01f24ab831bc1a0948d

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