Malicious PDF — malware analysis report

Static analysis result for SHA-256 37d6e4d4a260e4ca…

MALICIOUS

PDF

78.2 KB Created: 2021-02-26 07:47:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 76f5485652929eed63e6496bcbc4647e SHA-1: 4323aa9bea99c81412bca1d07888895285a346ef SHA-256: 37d6e4d4a260e4caf876301d04c035fda79f7fe15cf2ff5aed763d0117950adb
194 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
  • 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.
  • 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://yafferge.ru/wb?keyword=the%20secret%20life%20of%20the%20american%20teenager%20season%205%20episode%2015 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4420245/normal_601af84adba53.pdfIn PDF document text
    • http://lozipazom.sportsontheweb.net/pokmon_sun__moon_television_show_characters.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449178/normal_5fff7fab78d71.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380674/normal_60241ee9ccb40.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388276/normal_6029cb8f3610a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484380/normal_5fcd6fbe14129.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385217/normal_5ffca22c208b3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501980/normal_5fc729d982102.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420240/normal_60231a1884dbb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365560/normal_600101dca9ee9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479691/normal_5fcf5a45518a1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xejotapawadi.epizy.com/engineering_probability_and_statistics_problems_and_solutions.pdfIn PDF document text
    • http://muvasusug.epizy.com/furosemide_medication_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/fosalizuzu/reminiscent_yiruma_piano_sheet_music.pdfIn PDF document text
    • http://pebotavafusu.epizy.com/new_movies_2019_bollywood_name.pdfIn PDF document text
    • https://s3.amazonaws.com/rawesaragegugar/serge_lang_linear_algebra_review.pdfIn PDF document text
    • http://jijojigig.epizy.com/rezimapozupoxowuvifepujeb.pdfIn PDF document text
    • http://liraperuwuw.atwebpages.com/how_to_improve_lyrical_dance.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_off0000f30d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF30D 5692 bytes
SHA-256: c41d3025af6f441ba1b1a34f8e273faed4274a1020985c669d9abc1c355416a0
font_01_sfnt_off00010648.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10648 10860 bytes
SHA-256: 7b9dd9afca2424ba68198d3aa97cf580d6fe1c4e1a2d1b66b6341a8a777adc6a

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