Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb4ecab9a3f6233a…

MALICIOUS

PDF

44.9 KB Created: 2020-10-04 00:44:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: bb4fa8dbe07d1d45d0a29a221cee797d SHA-1: fb3b504ee21f4864de2c1cfeeecaf0885b6a4d1b SHA-256: eb4ecab9a3f6233a15521c2adbfe0f2558820ae88edd151a60a69aa6518f4d97
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=filetype+pdf+cyber+security In PDF document text
    • http://tikuwog.sarahparsons.ca/uploads/1/3/0/7/130739069/dejerusor.pdfIn PDF document text
    • http://files.get2steeping.com/uploads/1/3/1/6/131637178/suxidakodabuwosopego.pdfIn PDF document text
    • http://buxirefo.dvregion-aaca.com/uploads/1/3/1/4/131483416/xuveluxog.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/48aa33fc-1393-4eb3-9460-026e74b10bb3/durumafodabonazexaba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43b03c0a-f519-421b-9db0-64bcd564fa8d/78269427003.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7be63fa2-8cce-45bf-976a-490410f97887/tavefajimalexamokawika.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/8411/4839/files/pifakamoniwotuxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/3545/8198/files/51930794181.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0949/8536/files/jebewokifobo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f7849ad-5786-44f6-ac8f-201418dc9bed/fafajo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0d8ed91-293d-4747-8ffb-08c0df9d9881/bupilumezeg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b601db2-7205-4dd0-8bd3-f56978cf621a/sibejegurixus.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 3

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000657f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x657F 4804 bytes
SHA-256: 0fe47996bcd2ef5a35c04ed8568e0e5e7e7bb522298ff959d0b688e30d9c599b
font_01_sfnt_off000075ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75EF 10228 bytes
SHA-256: e1205ab509b274cbc078ee234a48abfafe5d8e08e95ab5d8d9ccb2f34974ad78
font_02_sfnt_off000098c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98C6 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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