Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccd11c41035c03a2…

MALICIOUS

PDF

55.2 KB Created: 2020-10-25 20:49:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 4dc6ac60172b3fcc8ddfa7fb00a9db26 SHA-1: d3672b1ec0afe0e06442dca1de2836459355c951 SHA-256: ccd11c41035c03a2865f8208521d1a7860fe07aeb76878282083bbd22be235f3
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.link/123?keyword=a+doll%2527s+house+character+analysis+pdf In PDF document text
    • https://mizunawakore.weebly.com/uploads/1/3/1/4/131406356/cce89719ee.pdfIn PDF document text
    • https://saxibodusazo.weebly.com/uploads/1/3/0/7/130740440/2169787.pdfIn PDF document text
    • https://jufaxexave.weebly.com/uploads/1/3/0/7/130775513/2135339.pdfIn PDF document text
    • https://sakukavazu.weebly.com/uploads/1/3/1/3/131379729/nebuz.pdfIn PDF document text
    • https://fodezamu.weebly.com/uploads/1/3/1/4/131407453/xisonitupidez.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377403/normal_5f92dbc895841.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379613/normal_5f948347ecd9b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415768/normal_5f95b85371daf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369318/normal_5f8910afca9a9.pdfIn PDF document text
    • https://firedisivimi.weebly.com/uploads/1/3/0/9/130969818/defelux.pdfIn PDF document text
    • https://tazejoga.weebly.com/uploads/1/3/1/3/131383942/pogibatajote_rosirorotow.pdfIn PDF document text
    • https://zevigetadafuwun.weebly.com/uploads/1/3/0/9/130969942/judozojuzuwis_gesikipewefu.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00007c5b.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00007c5b.bin)
    • https://cdn.shopify.com/s/files/1/0438/4410/8453/files/75543066511.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/7511/1586/files/segisotoxoguko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4432/1945/files/how_to_curve_text_in_photoshop_elements.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/5090/0889/files/65229000396.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/0930/1416/files/96368650908.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/07b2ef5b-eea8-40b4-bc59-2ea8a3890896/27640582403.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18efba76-e68f-49ee-a2e1-6aa68ec692fe/88844137667.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87018136-276a-4e11-ab11-d5ff62bb91e7/58525868348.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb17955b-1c21-48d3-9513-6b6e1cfdae3d/tawopiduzodumusokofunu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2be1c753-a513-4eab-a35a-6f4eca07accc/19040854709.pdfIn PDF document text
    • https://s3.amazonaws.com/ladojenefe/tawopezuremamevutodaza.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/62756425995.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/acordes_de_canciones_cristianas_para_guitarra_acustica.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_off00007c5b.bin)
    • http://dejavu.sourceforge.netIn extracted file (font_02_sfnt_off0000b1b2.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_02_sfnt_off0000b1b2.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007c5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C5B 5368 bytes
SHA-256: 11ec8fa7b22d7bdc8c816dba984160b871f4dabd0a47451765faf5c0bdfd1da2
font_01_sfnt_off00008ea4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EA4 10260 bytes
SHA-256: 107e8829f80e3418ff7733ebecc85e0baafb681cff447c40027d8fad2b6fae44
font_02_sfnt_off0000b1b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB1B2 18280 bytes
SHA-256: a446eff41250ab5e97230d3a8f407f1926e8472784e80e4a7e9e5ad135147342