Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c97079469dc0477…

MALICIOUS

PDF

39.0 KB Created: 2020-10-11 07:19:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 4bd0f95aa94360f54fac6373c091a5ad SHA-1: fb4e703c94e4d0a91ae70191b8ff436ed24181a4 SHA-256: 2c97079469dc0477fc4af7a0c864f3e20d540cf58d5ee977fbab2ac6ba0a0c5a
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.club/pify?keyword=sunbeam+water+cooler+instruction+manual In PDF document text
    • http://gumovikug.bobwatkinsrealty.com/uploads/1/3/1/6/131607163/5556879.pdfIn PDF document text
    • https://site-1036951.mozfiles.com/files/1036951/zewelibuselasowezad.pdfIn PDF document text
    • https://site-1037193.mozfiles.com/files/1037193/jedipesavenixokiwe.pdfIn PDF document text
    • https://site-1036702.mozfiles.com/files/1036702/sifinulo.pdfIn PDF document text
    • https://site-1040244.mozfiles.com/files/1040244/37776584144.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/1/0484/3038/3272/files/sixoretanugidamad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/4457/6666/files/educacion_para_padres.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/5178/9717/files/persepolis_online_stream.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb99128b-41d9-4006-bbac-06add875d6ce/38617482740.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/102f05e9-e5a1-41cd-9975-607a7c627916/20914547528.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20880312-9400-434f-8df4-76f05f65dfa1/42124386746.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5be8d05e-9923-4136-91c2-5d8ec8105ccd/desepateridativo.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_off0000577d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x577D 5280 bytes
SHA-256: 96f82f6513340aafefa5b8ad619ce1580369754a954f7d31e63bae6fd6e2dcd8
font_01_sfnt_off00006963.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6963 10620 bytes
SHA-256: 7d043a51c36e677fca8263fd55099606d8b22351ac7fb36967a0733e120dba8a