Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d94aed573b8e74a…

MALICIOUS

PDF

42.3 KB Created: 2020-10-15 23:50:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 18fcf32bb8c7d81195736eea94438de0 SHA-1: 0f3326628b86b66fd16d708fc1f8e61c349b074f SHA-256: 9d94aed573b8e74adf89f2c7514903bf56f0ec362008c79e1e17b8712d166c2b
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=english+unseen+passage+worksheets+for+class+4 In PDF document text
    • https://site-1048200.mozfiles.com/files/1048200/2020_porsche_cayenne_owners_manual.pdfIn PDF document text
    • https://site-1042271.mozfiles.com/files/1042271/97774350807.pdfIn PDF document text
    • https://site-1038519.mozfiles.com/files/1038519/49008596195.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367017/normal_5f889cb58b75a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366306/normal_5f8719b463b77.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366400/normal_5f87517f6c6d6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365584/normal_5f874ad8e6f61.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366029/normal_5f86f9ae6d733.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366009/normal_5f8725753611b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369772/normal_5f87ea625a793.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366010/normal_5f878a17c2906.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366389/normal_5f875442edb41.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/1/0487/0196/4438/files/metaphors_in_romeo_and_juliet_act_5_scene_3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/1744/9884/files/karetokokozi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/3025/0150/files/wifav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/3013/9039/files/lost_book_of_remedies_used.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8621/7383/files/88780796633.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/54e0b61d-9b03-41a3-88df-d7dacdc1d27f/pokizag.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9e42031-1e96-4a53-861c-c04d86ef51e4/wikipuduzogivowat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c0d1aa3-f00b-49f8-abed-908715bec9c1/61572701493.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec0908bb-a854-4da6-9c33-c82884765f20/gavekirunimade.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/559e7b22-020b-4d64-ba08-3bb32783e201/47346935709.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_off00006655.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6655 5480 bytes
SHA-256: 2450fc7a09ee0459881ea1cb624e0d6bfbee28357e52ff905c667e30b7cf9075
font_01_sfnt_off0000790d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x790D 10116 bytes
SHA-256: 09a8ad517bd7fe838b4e9627f3af82be67d46698c2285631743af6843364d68e

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