Malicious PDF — malware analysis report

Static analysis result for SHA-256 368e733200896d17…

MALICIOUS

PDF

53.5 KB Created: 2020-11-08 01:53:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-02
MD5: e4a1d1f45ce8da265676fe1d578519c8 SHA-1: 645ea2c81574e9032bd5545f4fd3349108780b61 SHA-256: 368e733200896d1714b068e4a96c9a6d432870ef9451cbfae1cdc388bb10f614
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://traffmen.ru/123?keyword=total+utility+define In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367303/normal_5fa4a7700af52.pdfIn PDF document text
    • https://xujaxivef.weebly.com/uploads/1/3/1/4/131438557/8d8a303496e8cf.pdfIn PDF document text
    • https://tolafapod.weebly.com/uploads/1/3/4/4/134486806/tojipopiwunuzo.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00009581.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00009581.bin)
    • https://uploads.strikinglycdn.com/files/d0276bd9-ac14-4465-8269-8b1de4d85a49/jewish_literacy_in_roman_palestine.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1125ac6c-9e61-4999-a30a-dd1744d6387f/27cm_x_18cm_to_inches.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/835dcafc-0a83-4d5d-ab30-a793d8839c55/63543163473.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/594f19b3-9318-47ea-9a66-8199d804d714/bupidadu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dca89cb7-aee3-4900-b144-793164f350e0/30431613870.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/07fcb6fd-bd3a-494c-ac75-16abdaef0a75/kirkland_signature_8.0_premium_digital_hearing_instruments_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/defc4611-adbf-4dd0-b862-740bd8459a8f/sadaji.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/663be7e7-bba7-4edf-be09-6403bf77121d/jimenuredinuzeboditiful.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a61b50d-a0fb-48b2-8cde-ec035abf73fc/ririz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/65f44619-416b-4ce0-9d0d-e1fe5867406c/sulifowu.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 extracted file (font_00_sfnt_off00009581.bin)

Related samples 8

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_off00009581.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9581 4676 bytes
SHA-256: 700bf52e7a00413ca1c5fd693b309f7dce1b81a7b7a65169b50abf563388f412
font_01_sfnt_off0000a58e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA58E 10676 bytes
SHA-256: 35c838e9ed6202535da09bde40610272232ed8aee7193502da9fbb2b2f65c4bf

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