Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2982b3a1b45f35a…

MALICIOUS

PDF

39.8 KB Created: 2020-10-09 23:23:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 10193a30c01e8854708f4d6fbdaadb34 SHA-1: 7ccd3c88cbc30f57cd36c4dc87b939bfd6ff9411 SHA-256: e2982b3a1b45f35a3e8042a5a8fbb563f20ba1685c7f666cc7f99f933c2bca10
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/strik?keyword=toddler+john+deere+boots+size+7 In PDF document text
    • http://files.8book.org/uploads/1/3/0/8/130873927/6fe99e743f9f8.pdfIn PDF document text
    • http://files.renewedbyfaithmissionretreat.com/uploads/1/3/0/9/130969002/8072335.pdfIn PDF document text
    • http://kibezixon.mzsacredhealing.com/uploads/1/3/1/4/131453872/5855726.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/bfe30c4b-8c83-407f-b8f5-260cd975f101/53261299760.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34a23b71-f062-4a81-a75c-6ed99126e083/2475415445.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9cef4cb-216b-497a-b629-cb24a8ede1d2/teverozuriw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8706/9348/files/nursing_diagnosis_for_smoking_cessation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6012/5080/files/61546043774.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5591/4918/files/fl_studio_mixing_and_mastering_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/9371/5864/files/84772618818.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_off0000600c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x600C 4996 bytes
SHA-256: 2032cf396d386c5d77fa3c1ed579eacdedd3680bfaa24f80ab16399add73e2bf
font_01_sfnt_off0000710f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x710F 9904 bytes
SHA-256: f1eca7174f1f9410a0ff4bb3e2fbfc41132c3fd11ba549f1bd8e3e036afc8f79