Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9ca8cd9564ef56e…

MALICIOUS

PDF

44.7 KB Created: 2020-10-17 05:32:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: c0b7bca2a3a37db323c8caac021a666d SHA-1: 62b0568cc83de8e96a4df6855f26b41dfe646868 SHA-256: a9ca8cd9564ef56e178a20362c41092dbbcbf7edcaed6574df5db8eeb56b7c2a
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://ttraff.me/123?keyword=how+to+become+tour+guide+in+israel In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367013/normal_5f87b7c57f2b5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375503/normal_5f8a498816e98.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376372/normal_5f8a48eec8214.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373992/normal_5f8a160dac469.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365607/normal_5f875ad4de0ee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366319/normal_5f8788b9baf71.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375716/normal_5f89727b46f0b.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/likanutavorolebonat.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/xekena.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/5d0cd511-7fe9-4ff5-a143-e9cc56e1feda/xegusep.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5143282b-3eed-4425-a934-6848fc7d17ed/28260429598.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eea920b6-2945-417e-a838-437de6497142/pawesonabibakalufow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/7024/0936/files/85876760871.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/2000/4761/files/2591206421.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/9289/2576/files/44554995883.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0467/9837/3013/files/is_robuxmania_legit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/8129/2706/files/47457947167.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1731/2152/files/kang_sung_hoon_instagram.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 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000061e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61E5 5332 bytes
SHA-256: c9cb6085430cfa8880dfca35d56b5bbfe880657325b331d60e856ef9925adf7a
font_01_sfnt_off000073f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73F2 10420 bytes
SHA-256: ee55e757936b7b0d5e877e505f570c831f41a9285e313485b17b047ea8666e89
font_02_sfnt_off000097a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x97A3 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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