Malicious PDF — malware analysis report

Static analysis result for SHA-256 66294dd4222000b3…

MALICIOUS

PDF

63.9 KB Created: 2021-02-10 16:16:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 6ec087cf544731447c132fe18bea8af1 SHA-1: 5ff642a9b963759a1dd6d193dc806b0b949be011 SHA-256: 66294dd4222000b3bddf127eccbb812b2e1b858177705e45b785f53d94e2761b
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://baarspo.ru/wb?keyword=bhagavad%20gita%20as%20it%20is%20pdf PDF link annotation
    • https://cdn.sqhk.co/pubamegumox/ygejdwC/xujalobolavu.pdfIn PDF document text
    • https://muvekova.weebly.com/uploads/1/3/5/3/135394778/gilugokawuvijex.pdfIn PDF document text
    • https://cdn.sqhk.co/gozafavapawu/hj1zxHG/52074639385.pdfIn PDF document text
    • https://cdn.sqhk.co/mugukawi/c8spzih/act_geometry_crash_course.pdfIn PDF document text
    • https://cdn.sqhk.co/gegenosuzun/hhig1ie/raxetasarowukogedelid.pdfIn PDF document text
    • https://cdn.sqhk.co/sudidoxa/cififiT/kizutedogunob.pdfIn PDF document text
    • https://wotuvinuvokotar.weebly.com/uploads/1/3/5/3/135330473/139df8f0.pdfIn PDF document text
    • https://cdn.sqhk.co/xidujefonari/iihg46v/70310304158.pdfIn PDF document text
    • https://cdn.sqhk.co/litigoruf/egd8Jih/fake_virus_code_notepad.pdfIn PDF document text
    • https://cdn.sqhk.co/muxigatatini/8RHO8hi/airport_scanner_images_hot.pdfIn PDF document text
    • https://voxonexagigiwal.weebly.com/uploads/1/3/5/3/135346225/6827542.pdfIn PDF document text
    • https://cdn.sqhk.co/besawevij/4jbQwjg/dialogflow_console_log.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/ronatiduzoxij/6276282104.pdfIn PDF document text
    • https://s3.amazonaws.com/xanunafojuloki/6646909917.pdfIn PDF document text
    • https://s3.amazonaws.com/rovikibixu/s_letter_love_video.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_off0000bdee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBDEE 5284 bytes
SHA-256: c4e57fc0ccb7ddd2740a637d84218ba383a4c8a01c8f67e9e3596a28b920ab7d
font_01_sfnt_off0000cffe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFFE 10324 bytes
SHA-256: 863ed22aeaa3fbde897c8324997006690c3db1d520e9f7c2c56898ee44d40a59