Malicious PDF — malware analysis report

Static analysis result for SHA-256 15b0337565c81f0b…

MALICIOUS

PDF

46.2 KB Created: 2020-10-14 23:40:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 2579e3b03b42f5391b3a0091bf9bebe9 SHA-1: 62026eabe0924166497d3268fca94a20bae9afe5 SHA-256: 15b0337565c81f0b8044821e0f73d7411fc412422633fd620f2c94ba771e1c6f
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/123?keyword=metode+studi+pustaka+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367019/normal_5f8730ffa488e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366336/normal_5f87241159132.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365601/normal_5f87223c38400.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367617/normal_5f8745e9412d1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365619/normal_5f8716f95ae52.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365626/normal_5f8704150a64d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366003/normal_5f870ca31d236.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/8605b432-9477-4fc0-8c62-4640a10e4c94/80257619792.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/200c1e41-72da-4d8a-9875-5ae7e3652b39/58124370570.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/06f84e00-6ed5-4369-b1a5-5a13440623db/walugizusitunevemupif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d263a82-1c9f-48d3-9a97-6a149974fdb6/83396170791.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1184/9890/files/68740851906.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/9439/6068/files/dyson_root_cyclone_parts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/4152/0278/files/2007_buick_lacrosse_owners_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/4432/8856/files/sebozolaruperubidibuzuse.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/3066/1278/files/9243816397.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03077b37-0569-4fe1-adfc-2bd42a16ec2c/22061463412.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8937949d-bdd7-4b1b-8cdb-710723dbe6ea/10695265455.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87110640-3ade-4092-879f-e8e4871096a2/sixafowimaliwagosive.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a205669-97bb-46da-9171-7b145b59d6c7/zaxiw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ab3411d-f172-4b84-bf2a-3db91e78cf9d/dafivuxesotadedofukovo.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007043.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7043 4976 bytes
SHA-256: 642aac1f94ddfc4617547c6af24b926d9276127b67779c915e310bf5bb364ea6
font_01_sfnt_off0000814b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x814B 1800 bytes
SHA-256: 51ebeec29509b87aa858d500e37ac8853184703d07d1f913ce36d8e1dc7764c0
font_02_sfnt_off000089d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89D8 9788 bytes
SHA-256: 1de58e0e7da4e6618d3f7648c4e2686307494cfa3fb76f06dbc361ffd8e5140b

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