Malicious PDF — malware analysis report

Static analysis result for SHA-256 d00d7522a5967565…

MALICIOUS

PDF

65.1 KB Created: 2020-11-10 00:55:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 65b087bc1ecb7cd5d99e7c5c6d4c5a37 SHA-1: e96fb954b440234733a0b5b0caf11e5e10867b9b SHA-256: d00d7522a5967565e6fbd6d0b653609a5d70d157b2d1325ac252c213db190e91
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://traffset.ru/wb?keyword=finding%20balance%20in%20life%20worksheets PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4393362/normal_5f926f4817003.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369153/normal_5f8f97883f686.pdfIn PDF document text
    • https://karozazosepi.weebly.com/uploads/1/3/4/3/134316788/c31bd30e9.pdfIn PDF document text
    • https://lefiletigej.weebly.com/uploads/1/3/4/5/134597596/a011996a5.pdfIn PDF document text
    • https://xujaxivef.weebly.com/uploads/1/3/1/4/131438557/8b7ed9afed.pdfIn PDF document text
    • https://gurigibafex.weebly.com/uploads/1/3/0/7/130739571/9635349.pdfIn PDF document text
    • https://vixijusodu.weebly.com/uploads/1/3/0/7/130776714/6467039.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/zuwimadaneb/exercicios_de_quimica_atomistica.pdfIn PDF document text
    • https://s3.amazonaws.com/gezetega/retro_fitness_hours.pdfIn PDF document text
    • https://s3.amazonaws.com/tibanepoxilibud/maths_question_bank_class_12.pdfIn PDF document text
    • https://s3.amazonaws.com/nazekisigiduz/2035044466.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_off0000c153.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC153 5536 bytes
SHA-256: 7f8c3055e6b156a650de569b4d7e20f0235d8ef8ddfad3da68956e59330918aa
font_01_sfnt_off0000d439.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD439 10452 bytes
SHA-256: 1dfa3324fd9108fb75b8493b027584213b6caa1fb7df7452d02792e30d61df76