Malicious PDF — malware analysis report

Static analysis result for SHA-256 172de430b2b3f560…

MALICIOUS

PDF

43.6 KB Created: 2020-10-26 22:20:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 07a9c6334483b9c528ce9965c0ebed93 SHA-1: c0ba57bcd0f8d5d4b8d7ecd86f0e955546907029 SHA-256: 172de430b2b3f5607b9a7983b0b7bb32c99e1dcc113d47126eaf464ed7cf4ce8
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/pify?keyword=affiliate+millionaire+club+login In PDF document text
    • https://zegojipoxe.weebly.com/uploads/1/3/1/0/131069766/ralomudep.pdfIn PDF document text
    • https://xusawoji.weebly.com/uploads/1/3/0/7/130739635/rudud-sugego-neludasovilobox.pdfIn PDF document text
    • https://buluzuzumaz.weebly.com/uploads/1/3/1/6/131636727/4265599.pdfIn PDF document text
    • https://vimikipemaw.weebly.com/uploads/1/3/4/3/134331773/mivotidelawe-nebekedorigimel.pdfIn PDF document text
    • https://fotejisatowonu.weebly.com/uploads/1/3/2/3/132302873/temogusu.pdfIn PDF document text
    • https://mepetimis.weebly.com/uploads/1/3/1/4/131483418/efa78.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382618/normal_5f8db7db6cc0c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368235/normal_5f8be08b1310b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366375/normal_5f8a8b5366a50.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/e3ad1423-8ce4-4b73-afc2-be6b8885e48c/sawavi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6ae59f6-330a-4c3d-8ba3-407c8f2763bc/12236729144.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ecb6150-c28c-404e-97d5-e7f359157412/damejawobo.pdfIn PDF document text
    • https://s3.amazonaws.com/guxosa/rosiz.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/simowevofako.pdfIn PDF document text
    • https://s3.amazonaws.com/dumupa/xapijezotu.pdfIn PDF document text
    • https://s3.amazonaws.com/zomuzigo/autocad_2015_basic_tutorial.pdfIn PDF document text
    • https://s3.amazonaws.com/moduxanakuri/business_school_book_in_tamil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3830/0568/files/happy_birthday_brittany.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0505/2078/5068/files/information_retrieval_system.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_off00006c15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C15 5152 bytes
SHA-256: bc2ae24ee2f84119325178b899099f86ae5e0189d0fe80398003f81c63548081
font_01_sfnt_off00007d88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D88 10388 bytes
SHA-256: 05b8ab9bdcbc6abe1ae95f50bcacf5431c664c9f43d90de37d5e6c7b9cedd9f6