Malicious PDF — malware analysis report

Static analysis result for SHA-256 96948ac2911765e0…

MALICIOUS

PDF

42.6 KB Created: 2020-10-07 19:57:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 10a445e2852d669c6be228af74eeba33 SHA-1: 757c5df0215f22c941c209c7fa96a04bb7ad1837 SHA-256: 96948ac2911765e06e872cb48c91a1354ff94464e6778019ff482d7b5c54c6cc
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://cctraff.ru/strik?keyword=memory+man+david+baldacci+pdf In PDF document text
    • http://files.chrisminamyer.com/uploads/1/3/1/4/131438835/714a02f8b7.pdfIn PDF document text
    • http://files.airn.ca/uploads/1/3/1/8/131871727/najinogefenulidovufe.pdfIn PDF document text
    • http://files.my-early-morning-thoughts.com/uploads/1/3/0/9/130969607/7482561.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/3d805b10-1a3a-4cbf-a67c-0a7e46e0f1d8/duwotakaganuzalusej.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7bf049fb-4761-4435-be5c-c4129add1882/92871531682.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/776b2401-fc58-490a-ac4d-daed24083d02/lewavazapafumepajef.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62c00ed9-b11e-4038-aeb0-73ccdc950d17/mojaramewamitiginumasar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77b26ae5-9257-43ad-9af3-4d1a2a9b929d/sumeraxirosaginizuvev.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6fcdcb7d-0566-4fab-8e60-50ee99815785/59753145568.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/076500e4-c99c-403d-8523-bceb5f7d5ab6/45428490701.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/377cd85a-678e-442b-880d-b6ab044704b6/61225958478.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/793e38c9-6763-4de9-832f-3382dce828f4/boroselop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/0648/7460/files/92011970033.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4303/5048/files/16828698830.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/7202/3445/files/fivamasijokugizolegujavot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/6864/8343/files/98943699227.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

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006874.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6874 5428 bytes
SHA-256: 00d812b5861f2fb07f67178140b48ea6c201ccbb39b6a6184a07c5b116c778cd
font_01_sfnt_off00007aec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AEC 10204 bytes
SHA-256: c9ddfcb50c1184f5ed180460406df74d943394edd15e27c231b5e4d47d69bd99

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