Malicious PDF — malware analysis report

Static analysis result for SHA-256 de1311725f07d75c…

MALICIOUS

PDF

60.3 KB Created: 2020-10-04 17:42:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 360e23081b02c6417da5e8329860c8e5 SHA-1: 6d8e1c7e0c02a5567b20982ae94a9b71b5cb97a0 SHA-256: de1311725f07d75ce4c1ee2073b29f36d3ffa5a5ef0f4d46872d8fd906205056
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=sensory+details+list+pdf In PDF document text
    • http://joxeso.komodopioneers.com/uploads/1/3/0/7/130775432/4673748.pdfIn PDF document text
    • http://files.lovinghotstuff.com/uploads/1/3/1/8/131856276/fcde9d161a4d1.pdfIn PDF document text
    • http://jijuz.sparadise.ca/uploads/1/3/0/8/130814471/1919712.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/1/0432/9318/0070/files/solving_simultaneous_equations_by_substitution_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6147/6504/files/insanely_ios_jailbreak_6.1.6_no_computer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/9125/8263/files/metefitowurefakavogusas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1188/9573/files/83115834110.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0364/0999/files/46059614796.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e4e2a3a-566e-4a65-bc77-1e5b21c4d54b/65410759190.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40c7f7e7-d56a-4b60-afb9-8ac3d8781ceb/25845587006.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b714ddcb-bbae-4113-ba45-04e238a8a2b9/kipowasividajosa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1760e99f-e0e9-4ec6-bc9f-c005ccf04d6c/6526612474.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e53000b5-9eab-41b5-ae65-2e448bebc8bc/48319722403.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac0dd661-377c-4253-9794-94aa01819796/nixuzarafa.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 1

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_off0000a35b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA35B 5240 bytes
SHA-256: 18a61ab2cc07a25ab8441ff61a86b7b087bb1368ef1ffd8228d0ca4001745904
font_01_sfnt_off0000b53e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB53E 15460 bytes
SHA-256: 2d72856cd1507a98e1ee0d295790e53e2280a9416233194d5d6e4bedd2c68712

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