Malicious PDF — malware analysis report

Static analysis result for SHA-256 09cd95735d59384c…

MALICIOUS

PDF

83.5 KB Created: 2021-02-27 21:02:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 195e74d2117d5f5a0e553b68ccdbe814 SHA-1: a632cb2eee48f6c782df767e46dc84df49edcaf3 SHA-256: 09cd95735d59384cabf689b9a22341dc8369f8f6009abd94951ae2d82309cae7
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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=samsung%20soundbar%20hw-e450%20firmware PDF link annotation
    • http://sokolov.fun/27397341609rrhqs.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368496/normal_601b8f443c8f6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410431/normal_5fcb2f6656775.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408865/normal_5fea3dc0813f3.pdfIn PDF document text
    • http://organic100.fun/how_to_make_your_crush_miss_you_onlinel5ph6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454426/normal_5fc8878967852.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485165/normal_6015e2c73e058.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393901/normal_5fee69cf4ac2b.pdfIn PDF document text
    • http://healthit.space/geometry_for_enjoyment_and_challenge_textbookv3bik.pdfIn PDF document text
    • http://rawoxaxevog.mygamesonline.org/83777044444.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477864/normal_6004dbe31fb50.pdfIn PDF document text
    • http://rankingcoach-apps.com/men_s_hairstyles_for_fine_hair_over_50x9lwv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426090/normal_5ffc89a72b881.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/buxoparadazegu/juwazaxer.pdfIn PDF document text
    • http://jatoxat.atwebpages.com/tebelukideb.pdfIn PDF document text
    • https://s3.amazonaws.com/tajimipojimo/gojufen.pdfIn PDF document text
    • https://s3.amazonaws.com/fevobelijogal/chemistry_notes_spm.pdfIn PDF document text
    • https://s3.amazonaws.com/pazovugal/gunibozuwa.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_off000105cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105CD 6012 bytes
SHA-256: 5a8ef5a4e82291576ef6a6fbd7698d473b7623cb3b84594adc8c225d67ae1dca
font_01_sfnt_off00011a3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A3B 11356 bytes
SHA-256: 023dcf4b44e8c521dbbdf46fa0fa9116b68a54a2a80dac34da0d007bc9ed6a89