Malicious PDF — malware analysis report

Static analysis result for SHA-256 369370441d6acf71…

MALICIOUS

PDF

60.1 KB Created: 2020-10-14 17:36:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 8dd54a16babcb8da0535bdad2c921b90 SHA-1: 2756f75f7278781a7febba2aeabd37f64b5ec62e SHA-256: 369370441d6acf7159d1200c51835748f9cb9b7bb69539d92ec32d5143f9c52b
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/123?keyword=2020+rav4+manual+transmission In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366028/normal_5f86f9b693b99.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365591/normal_5f86f96cd4331.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366000/normal_5f87063f988b0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366000/normal_5f8704ba7ffb7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365642/normal_5f86f75cc7134.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365536/normal_5f86f51255625.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366048/normal_5f86f8be01527.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366057/normal_5f870995d04e1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365655/normal_5f870b5426465.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366003/normal_5f8700830dfa7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365598/normal_5f86faafc6201.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366022/normal_5f8700cade764.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365600/normal_5f8705a820526.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365525/normal_5f870bddb3caf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365575/normal_5f870406c9144.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365552/normal_5f8701775e7f9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366045/normal_5f86fed07983d.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://cdn.shopify.com/s/files/1/0504/2556/1275/files/4041006489.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/6223/8625/files/niwigewixobopik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3608/1308/files/dulusasavolasefabagu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a0fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA0FB 4924 bytes
SHA-256: 15ea0eeaa88adf8ccfbf058a70073f6a1987feff5c991bc6230452450b775e29
font_01_sfnt_off0000b18a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB18A 10272 bytes
SHA-256: 461a0b2f9c8c352e06cc2c362fc61d83690c909844a539c31a6c021b1c578fd7
font_02_sfnt_off0000d49f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD49F 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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