Malicious PDF — malware analysis report

Static analysis result for SHA-256 179749cef40628c2…

MALICIOUS

PDF

47.0 KB Created: 2020-10-19 16:19:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 3e6f86e7508c6362541852c273551560 SHA-1: 345b52390ed4c75583981e7fc8d468623572bcc2 SHA-256: 179749cef40628c2767c969b1f0a383ade4c4be6f6de22d0ebef07e831bac548
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=jimmy+dean+sausage+croissant+cooking+instructions In PDF document text
    • https://cdn-cms.f-static.net/uploads/4382187/normal_5f8b76bb64d51.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368758/normal_5f89a7090a17b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368999/normal_5f891d5d45551.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366377/normal_5f8712ae890e9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367627/normal_5f874a082ba4d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365636/normal_5f8b4a9225a91.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367296/normal_5f8890824e84f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368954/normal_5f8d42ae2acdd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369505/normal_5f8be5d2de5ba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380082/normal_5f8b407caf4ad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365586/normal_5f87e36536c3b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366003/normal_5f874fdc17b8c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384649/normal_5f8cfdc2a174a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367005/normal_5f873c72defd1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366031/normal_5f8715547da07.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366645/normal_5f873b67a5559.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375087/normal_5f8b75ef07dfe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/03183c06-f4e5-4684-9ee0-4cca54c9908f/50800859074.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cad5396b-4af7-46fa-84bd-39a94138f960/87628143681.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2beecd25-12e7-46b5-bed1-b653a0f127b8/20869225547.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b03d79e4-e9c6-4b6f-a1dd-a672ba7436ab/pezuxazofimexaxufiwo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e59b9a8-106b-4c00-9c96-141c62fb8d0f/pro_vehicle_outlines_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/0027/4341/files/39050932857.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9958/4680/files/the_house_on_mango_street_hips_quotes.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_off000078d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78D6 5380 bytes
SHA-256: e17f8746e35ae3576b2855e787f73fda40694d872ea2e52abcbb5d261c439545
font_01_sfnt_off00008b0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B0E 10352 bytes
SHA-256: 97e9703ed83f4531097f698bed0a2c711e60cba46864377ab0aad8ee31b0e110

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