Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d3c10c464eb5a70…

MALICIOUS

PDF

42.7 KB Created: 2020-11-07 18:43:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 19a9f6d2f222057f6e678cda5162a0fb SHA-1: 295c6f60b19fc1d44a2dad221c73c36955915fb3 SHA-256: 3d3c10c464eb5a701dbad0a20cbcfe793d04ff306b0533404afb6da1a5e2b4f0
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://traffine.ru/wb?keyword=2003%20honda%20civic%20service%20manual%20pdf In PDF document text
    • https://varipejat.weebly.com/uploads/1/3/0/7/130739080/699612.pdfIn PDF document text
    • https://xemojunaxumig.weebly.com/uploads/1/3/4/2/134265853/ledegopobim.pdfIn PDF document text
    • https://sidusumidiwef.weebly.com/uploads/1/3/4/3/134366372/6086138.pdfIn PDF document text
    • https://zizuralozirufu.weebly.com/uploads/1/3/1/4/131483034/5341c41.pdfIn PDF document text
    • https://suludizivot.weebly.com/uploads/1/3/1/3/131383823/6813984.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/dorulusof/99651248934.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabom/sidubabagofira.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/jeep_wrangler_2018_brochure.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b612b56-57ec-42cb-8070-2adf998b4890/parks_and_plates_the_geology_of_our_national_parks.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa172da4-e377-4ce0-9c24-f56933dc7905/zuxilorukone.pdfIn PDF document text
    • https://s3.amazonaws.com/mozirolinitaje/55091653501.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf5b10fb-37ec-4f7c-9e05-12e60dfbd178/powisatijuwobetapajidodu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0ef8343-5c2e-4871-b0ab-4fdcde1dc747/hp_photosmart_premium_printer_manual_cc334.pdfIn PDF document text
    • https://s3.amazonaws.com/dofufiri/siddhartha_joachim_neugroschel.pdfIn PDF document text
    • https://s3.amazonaws.com/sisaxu/last_trumpet_ministries.org.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisi/74970910034.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_off000065df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65DF 5796 bytes
SHA-256: daef8644d2f3b57651ed84e2046dd7693dac94904cf9f8bbde0ddc3a559a6272
font_01_sfnt_off00007978.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7978 10704 bytes
SHA-256: d9cd2a5c105191efe2b886946696ae2db1aef53dc7e3e71524658758cfad3054

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