Malicious PDF — malware analysis report

Static analysis result for SHA-256 4476d2feb60b6599…

MALICIOUS

PDF

70.3 KB Created: 2021-02-16 17:57:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: d30e86f71985b4901621d0bd3602312f SHA-1: 9997426a59e8853333f9824d992aeba629af07dc SHA-256: 4476d2feb60b6599967bc35928b4af6ce28d8f4cc323b391323d2ac10c10e4cf
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://maypoin.ru/123?utm_term=how+to+clear+error+codes+on+samsung+refrigerator PDF link annotation
    • https://mokenexub.weebly.com/uploads/1/3/4/4/134478104/4281691.pdfIn PDF document text
    • https://begakidiwadagav.weebly.com/uploads/1/3/1/3/131397934/zagelusamapo_kuvugeka_xegixagufed_rilajefudusujix.pdfIn PDF document text
    • https://rojobasexadef.weebly.com/uploads/1/3/2/7/132711954/1ab93ed.pdfIn PDF document text
    • https://sonoxezepokamev.weebly.com/uploads/1/3/3/9/133999938/zijewebitejizes_jafibipokav_kaseno.pdfIn PDF document text
    • https://vevikonupefafo.weebly.com/uploads/1/3/5/3/135391347/dokoxesoz.pdfIn PDF document text
    • https://mibirewisurux.weebly.com/uploads/1/3/5/3/135313447/9de5105144bbc.pdfIn PDF document text
    • https://nobexuliga.weebly.com/uploads/1/3/1/4/131405940/dikivud.pdfIn PDF document text
    • http://sbrf.link/287931524155hewm.pdfIn PDF document text
    • https://ludurodeb.weebly.com/uploads/1/3/4/8/134852143/guloxomiwenok.pdfIn PDF document text
    • http://funseeds.site/vimalizunikokotabezs3xe6.pdfIn PDF document text
    • https://zukugobewumebol.weebly.com/uploads/1/3/4/0/134017275/0d0854c89e20c1.pdfIn PDF document text
    • http://gprofights.ru/15228476434bkn04.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/novifamigot/ceftriaxone_indications.pdfIn PDF document text
    • https://s3.amazonaws.com/nodetuxapabara/bubeteb.pdfIn PDF document text
    • https://s3.amazonaws.com/rovuweraja/sasamek.pdfIn PDF document text
    • https://s3.amazonaws.com/fofeguj/aapd_caries_risk_assessment_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/zafaronivaj/lusof.pdfIn PDF document text
    • https://s3.amazonaws.com/sixenogafopoj/premiere_pro_templates_nulled.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d53e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD53E 5396 bytes
SHA-256: 5b83604c7b486be0a6c88488f96489e192456d96bcfe236c216bf7bf90555772
font_01_sfnt_off0000e78f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE78F 10596 bytes
SHA-256: d62f4f2d9965308076676cb4303a9bc6eb19e723fd09dbabc805a9a678cf379a

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