Malicious PDF — malware analysis report

Static analysis result for SHA-256 abfc7586a267fa5e…

MALICIOUS

PDF

68.6 KB Created: 2020-11-20 09:45:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: b99c6c8dfbe86ca5ebf411a7919e3cdf SHA-1: e0ad6604e6a5fbb32748413911fe402723992b62 SHA-256: abfc7586a267fa5ee1d02bea3c1e4b159a9743053ad9924c726de121ebf93ce0
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=yadea%20group%20holdings%20ltd%20annual%20report%202018 PDF link annotation
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/filosom-lusiwikafese-jerupuxorukoti-novubolifunuw.pdfIn PDF document text
    • https://sutapupimode.weebly.com/uploads/1/3/4/6/134615637/xevufokofewefaloge.pdfIn PDF document text
    • https://lesofetu.weebly.com/uploads/1/3/1/3/131378838/b3f15256.pdfIn PDF document text
    • https://dawemewi.weebly.com/uploads/1/3/4/7/134747996/wikabowijonifireribi.pdfIn PDF document text
    • https://biwugina.weebly.com/uploads/1/3/1/1/131163984/kibixuwizeki.pdfIn PDF document text
    • https://wixurawitubeza.weebly.com/uploads/1/3/4/3/134319602/kifevipixim.pdfIn PDF document text
    • https://dipakinujudisil.weebly.com/uploads/1/3/4/4/134468351/4424989.pdfIn PDF document text
    • https://zozunane.weebly.com/uploads/1/3/4/3/134316446/wesetipunadadobupa.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/vawoginele/kewomeva.pdfIn PDF document text
    • https://s3.amazonaws.com/teximikamukubo/dokekukigokufa.pdfIn PDF document text
    • https://s3.amazonaws.com/biwuwukesazef/57294758704.pdfIn PDF document text
    • https://s3.amazonaws.com/belapawerezuju/64247245680.pdfIn PDF document text
    • https://s3.amazonaws.com/purufiz/notoj.pdfIn PDF document text
    • https://s3.amazonaws.com/ligole/73219134921.pdfIn PDF document text
    • https://s3.amazonaws.com/lakadutof/harrison_public_schools_ny.pdfIn PDF document text
    • https://s3.amazonaws.com/juzowilipi/tentacle_wars_2_unblocked.pdfIn PDF document text
    • https://s3.amazonaws.com/batoragubukepo/core_strengthening_exercises_elderly.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_off0000ccf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCF8 5704 bytes
SHA-256: ffe95878184dc8103a473189b081b724fa17b9f6a6be110358eab0392480fc42
font_01_sfnt_off0000e05f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE05F 10664 bytes
SHA-256: a15c95523cce5d33b89780f06110a96410a523af9adad2bf2f71ff11a8c5a47f

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