Malicious PDF — malware analysis report

Static analysis result for SHA-256 94df9b464c48eec9…

MALICIOUS

PDF

40.5 KB Created: 2020-10-02 22:01:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: f58f71911d5b44d3538933484a904055 SHA-1: 801f62a401e868d641a951b2e258ffa2e78861cb SHA-256: 94df9b464c48eec98d0a3853abb1db60683926d3414e35c85454c2ed6bc0d260
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/strik?keyword=scratchjr+for+windows+7 In PDF document text
    • http://files.omegaelectricinc.com/uploads/1/3/2/6/132695339/xolefef.pdfIn PDF document text
    • http://wagav.arealisticplan.com/uploads/1/3/1/3/131380284/4682e2c5a79234f.pdfIn PDF document text
    • http://files.khsswim.com/uploads/1/3/1/1/131164473/tigenisug.pdfIn PDF document text
    • http://files.deannastrasse.com/uploads/1/3/0/9/130969153/liminalijekom.pdfIn PDF document text
    • http://zagatij.maslowspeak.com/uploads/1/3/2/6/132680949/5672208.pdfIn PDF document text
    • https://site-1036920.mozfiles.com/files/1036920/44542044266.pdfIn PDF document text
    • https://site-1036885.mozfiles.com/files/1036885/84353688166.pdfIn PDF document text
    • https://site-1036981.mozfiles.com/files/1036981/nuperelirax.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/9870/4546/files/tipos_de_computadoras_que_existen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/5883/4837/files/cassandra_peterson_wiki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9869/4042/files/california_rental_application_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/2716/5095/files/zojifonukalamodak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7157/6993/files/kusatogetusijuber.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2224/4264/files/pathfinder_burnt_offerings_maps.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/4452/3162/files/2004_yamaha_big_bear_400_service_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1733/8005/files/delin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3123/0624/files/tazisuporogepuvufa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1783/7472/files/duliripagoleludivafolawer.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_off00006025.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6025 5428 bytes
SHA-256: 67e163de183d5c4974105d5dec35bda37acf89d64c52f18948439dfc30621e3f
font_01_sfnt_off000072b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72B5 10128 bytes
SHA-256: 8292a410e6bfdb8c7a00ce6dfeaa1380703d2f1839a97f2e32a5c755752b2cf4

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