Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ff308c98e731a4e…

MALICIOUS

PDF

63.6 KB Created: 2020-10-11 22:11:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 2268fa3d4633dbf3e81253738d7bd37c SHA-1: 7b42271af9d6c594f139f15d1e893a8dcdc8bfed SHA-256: 7ff308c98e731a4ee3e5ba931685d7528a0aa9cffc26d4b7c8239edbe2e3ad17
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://ggtraff.ru/pify?keyword=senior+discounts+2020 In PDF document text
    • http://files.whitetailinstinct.com/uploads/1/3/1/1/131164132/wepazus.pdfIn PDF document text
    • http://files.1lsurvivalexperience.com/uploads/1/3/2/6/132681450/9066820.pdfIn PDF document text
    • http://files.osatelegraph.org/uploads/1/3/1/3/131398452/xixumuz-lujoxofu-vupawipuzino.pdfIn PDF document text
    • http://files.goodharborpottery.com/uploads/1/3/1/3/131379860/zotox.pdfIn PDF document text
    • http://togifuwe.adelina-graca.com/uploads/1/3/1/4/131437987/4804043.pdfIn PDF document text
    • http://baxomo.maydayhomemanagement.com/uploads/1/3/2/3/132302894/detuz_juginidij_dujurolilori.pdfIn PDF document text
    • http://files.ryanspeterson.com/uploads/1/3/1/6/131606289/vowisapa-rokugerusupa.pdfIn PDF document text
    • http://puwup.dominicrohangates.com/uploads/1/3/2/3/132302815/kevapirulejofozomip.pdfIn PDF document text
    • http://files.veenalifestyle.com.au/uploads/1/3/2/3/132302764/a52f2792c4a7aa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0485/1770/9986/files/nofosepitexejoduwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/3935/8882/files/wade_hampton_lanes_pro_shop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/4736/6039/files/37587668524.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1194/6134/files/4198121215.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_off0000aedf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAEDF 4948 bytes
SHA-256: 3dc07c556bbb75cd4c9a8516ae00a478ba1e9cc7e36dfd82116c57e4aa06a3c3
font_01_sfnt_off0000bfb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFB2 10572 bytes
SHA-256: 95cc12e94b6eedef79c88f8979d91dd28e4b60612c7caad9bc2b71642456c240
font_02_sfnt_off0000e3d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3D0 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333