Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0f254d069062d65…

MALICIOUS

PDF

40.2 KB Created: 2020-10-31 09:20:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 01fff2b0b49d9505201be3c2ce76066b SHA-1: 3baed5f628d53d772ba0a018ab261541d9fa083a SHA-256: e0f254d069062d6536d706b4da6a99781c13e95a0178214271be5cd98a193a47
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.me/123?keyword=morgan+and+morgan+tampa In PDF document text
    • https://vimiwegom.weebly.com/uploads/1/3/0/7/130775837/2029881.pdfIn PDF document text
    • https://vixeroniwemeful.weebly.com/uploads/1/3/0/7/130740086/0fc856f05f8aaf.pdfIn PDF document text
    • https://firedisivimi.weebly.com/uploads/1/3/0/9/130969818/8543469.pdfIn PDF document text
    • https://xalipifizipig.weebly.com/uploads/1/3/1/3/131379045/3639528.pdfIn PDF document text
    • https://jawowigo.weebly.com/uploads/1/3/0/7/130774982/4765241.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/55b89827-9e81-48f3-a728-743e0ed36ac3/19401828794.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/7679/5548/files/jefivefuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0505/0646/5472/files/85960365094.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85bc9caf-b2a0-4969-a885-82ed4ee2c1ab/dosezatepiborudegalanux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/4056/2074/files/cervical_myofascial_pain_syndrome_headaches.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/5893/0086/files/rulifofaxivumuzixivoriki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de01b769-882d-4b02-bede-c32837c67e26/25945804535.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8107/0747/files/dupezok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/3991/4646/files/bagutitukedigesanorig.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_off00005ec4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EC4 5076 bytes
SHA-256: 11d5fcd762f6e6ceb66a9e4656bdbdd315258e62f528481ca09b743a88633ded
font_01_sfnt_off00006ff9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FF9 10560 bytes
SHA-256: 348071683b1e5580a2eda47f162d696be50b85e465785ebb4d3229404297a9d6

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