Malicious PDF — malware analysis report

Static analysis result for SHA-256 b09ee3aa5f5aa052…

MALICIOUS

PDF

49.4 KB Created: 2020-10-26 11:51:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: a2b1f288519cc32140b5cfec6fde35b7 SHA-1: 8b092222f33c4f349cd072d27b3bf557a0b18fb3 SHA-256: b09ee3aa5f5aa0520da360a1ce75dd1b957412a7e5cfaf0af68c50fcd3950d55
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://gettraff.ru/pify?keyword=behavioral+interview+questions+answers+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4370269/normal_5f968d5dace08.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365552/normal_5f8702c9ca0d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366662/normal_5f88b714beac2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380383/normal_5f8f33ea55c94.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375518/normal_5f8e4e978c349.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388420/normal_5f951337320d3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404727/normal_5f936c8562f8a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365598/normal_5f8759965ca3c.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/1/0497/2927/4007/files/nar_code_of_ethics_final_exam_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6362/2297/files/split_movie_online_netflix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/1333/8822/files/76697237067.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9903/6579/files/sarujijupokuvenilonivoguf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/2868/0351/files/cedar_grove_baptist_church.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/1673/0799/files/4501665186.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8140/9713/files/puzijilezijaxuwozomali.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_off00008283.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8283 5456 bytes
SHA-256: 4375ec507b443eca4c2425706f747fb29b429b122805a74e4e825f06f0cd212c
font_01_sfnt_off0000951d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x951D 10360 bytes
SHA-256: 2f2bed33f38d7a6262443f9e3cff53bb0abd423f3d3e36eaa2967c1580a68bf2

Open this report in the interactive analyzer, or submit your own file for analysis.