Malicious PDF — malware analysis report

Static analysis result for SHA-256 0dac12c821a3c7c1…

MALICIOUS

PDF

35.4 KB Created: 2020-10-07 20:29:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: a2601cd0d8130d9f5aa6adf7000b13cf SHA-1: 99db00d08d05e0c77fdd59b94162c3db48bea528 SHA-256: 0dac12c821a3c7c138b289d8b7c4d45f9772a0eca54ffbfb8a28b093a4e9b9f2
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=aftab+e+alam+book+in+urdu+pdf In PDF document text
    • http://files.villagehearthcohousing.com/uploads/1/3/1/8/131858661/jeliwe.pdfIn PDF document text
    • http://files.davidhaziza.com/uploads/1/3/1/6/131607683/1666735.pdfIn PDF document text
    • http://files.lgstandc.com/uploads/1/3/1/4/131453636/8a0db67cb26.pdfIn PDF document text
    • http://files.hardloxjewishfestival.org/uploads/1/3/1/6/131636954/af7f2.pdfIn PDF document text
    • http://suxatomov.jumpline-group.com/uploads/1/3/0/9/130969572/2619859.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/d9474543-5b7b-430d-92ef-33755baa70bf/viwani.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8158f7cd-2a7c-4f8a-8bb2-ebd88ca5b708/64269505849.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef87e5c0-6a0f-4a74-bb53-9a7c180476f6/larapesunozedesadezuxi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f0b25c89-5d22-4542-bfe8-a21c0a9872dc/voxeboxe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91979a1c-df7a-4aab-9ba5-54f2b095de13/xuloritaguzutus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa0ccec8-c7c3-474f-b267-d6578441d801/kiwojexox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/0522/3327/files/63669362155.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/3310/4036/files/82632117569.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1791/8875/files/73414217690.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_off00004e29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E29 5200 bytes
SHA-256: f0e54a5e745f4ddad85e235689bb7d7f3719fc77364e9d893b4ad656ec3c01f7
font_01_sfnt_off00005fc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FC0 9732 bytes
SHA-256: 94677bdcdf11d9c8517cb71f9ab309075dcc55a37afe44c5fe1914f2b436247c

Open this report in the interactive analyzer, or submit your own file for analysis.