Malicious PDF — malware analysis report

Static analysis result for SHA-256 2824bfc686933f41…

MALICIOUS

PDF

44.8 KB Created: 2020-10-06 10:10:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: d1c11c5c2bd1ae8b9e6f2cd94152cf3d SHA-1: 7713bae921485c118a84b10f776e1a1795c91e2c SHA-256: 2824bfc686933f41ca7f3f597ab1d2d46864f8373be9388d6ade36e736c2da1b
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/strik?keyword=mexico+a+traves+de+los+siglos+tomo+6+pdf In PDF document text
    • http://zinovaz.sunrawhealingdesserts.com/uploads/1/3/0/7/130775545/236536.pdfIn PDF document text
    • http://files.nossg.org/uploads/1/3/1/0/131069915/2143487.pdfIn PDF document text
    • http://files.extreme-kids.com/uploads/1/3/1/6/131606487/7275028.pdfIn PDF document text
    • http://files.ironstormcorp.com/uploads/1/3/2/7/132710743/japijuj.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/1/0467/9922/4983/files/91173381636.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2728/9496/files/kisefoxuxedarivinof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3623/7206/files/miremiriki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe85d1b6-f942-42e9-8841-2c77e7502c3d/gitezudoletorigipunedu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b76a2a4-8686-49f1-91ee-1c9a45a967b8/misitikozatozututabo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a747d7b2-cd43-4a26-a04a-90db5beb5838/59352115464.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4986538-2b92-48ba-87db-f2aee219a912/9403936937.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d19c16a7-738e-4f02-ae98-11ebad2f874c/20553486876.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c279a1e3-63d3-42ee-9a67-5afdbb5958c2/talijitis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/36867176-d5a8-4594-baa0-6874d29997fb/dotanupapazebabip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62014072-31df-4d19-a26b-727c56e82462/28616869863.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c64224c-e89b-4ab7-9af0-e084a7adf841/31575834288.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

Related samples 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D42 5760 bytes
SHA-256: 68a0b2354a5ceb18f4335d1b927eec6476528f6239a6e93145af6dfd5e2fee44
font_01_sfnt_off000080e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80E2 10872 bytes
SHA-256: 9698ad4ada17284e65611b2686f817e82b4594d8ddcb19a2045958cecdc8a01b

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