Malicious PDF — malware analysis report

Static analysis result for SHA-256 46196623d4a3fb04…

MALICIOUS

PDF

52.2 KB Created: 2020-08-12 18:14:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: bdb157e6712c8e35b58a857936db7722 SHA-1: 2b929cccdb3dfd94636f46fb9d690099bd45b459 SHA-256: 46196623d4a3fb04ea55fe65c37581fe7a4d64c93c8bf0245d62a4ce140a1217
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://ttraff.ru/pify?keyword=cs+lewis+space+trilogy+pdf In PDF document text
    • http://files.alyssadanna.net/uploads/1/3/0/9/130969218/loruv_kuwobinuduko_korezu_pamavinujuzof.pdfIn PDF document text
    • http://files.computerrepairnerds.com/uploads/1/3/1/8/131872087/tibodenafipefeg.pdfIn PDF document text
    • http://desuzov.natureswaylabradorpups.com/uploads/1/3/2/7/132710795/rijoxopo.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/1/0429/3401/0015/files/vupevavofozuwizenew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/87960197539.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7110/1346/files/chrysler_owners_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7352/8213/files/36815510394.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6745/7188/files/50015136174.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2137/6410/files/the_power_of_a_praying_woman_stormie_omartian_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7235/6514/files/efficiency_and_effectiveness_in_education.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8481/5259/files/63508438243.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2117/2897/files/sims_4_tray_importer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7633/8335/files/html_codes_list_download.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_off00008adb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8ADB 5424 bytes
SHA-256: b5329c9840e81e22952e41fbbb357122599c679d0dca4ccb0f81e9aa041f95ac
font_01_sfnt_off00009d6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D6F 11548 bytes
SHA-256: 59cd1168fd804adacc32ef03fff48bc457545e7f5af787fc034747294eb2ee2a

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