Malicious PDF — malware analysis report

Static analysis result for SHA-256 464e682733d1f6c1…

MALICIOUS

PDF

63.5 KB Created: 2021-02-18 20:37:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: c32f217fd36c9159df78a2fd0fbb5f44 SHA-1: 21f966cd54bbdc34da8e6f4ce2481daa9a33c1b6 SHA-256: 464e682733d1f6c13989e8031fa4d0fef07b4b15da9e879569410985f86ec97c
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://baarspo.ru/aws?utm_term=bee+hive+plans+metric PDF link annotation
    • https://cdn.sqhk.co/wobuwozavenu/QjiJyjj/23038698287.pdfIn PDF document text
    • https://xevivipemasap.weebly.com/uploads/1/3/4/4/134481894/fivojuzem.pdfIn PDF document text
    • https://cdn.sqhk.co/bigulikexupa/msB3hcm/nuwozovesotitojevita.pdfIn PDF document text
    • https://cdn.sqhk.co/gefimiwotux/p20wjgt/nogetojaf.pdfIn PDF document text
    • https://foxenaduro.weebly.com/uploads/1/3/1/1/131164157/0934630.pdfIn PDF document text
    • https://cdn.sqhk.co/jotepomi/kE65Qje/kijujuwakasegov.pdfIn PDF document text
    • https://mokoluwi.weebly.com/uploads/1/3/4/5/134595511/1bcb212.pdfIn PDF document text
    • https://nawajutexi.weebly.com/uploads/1/3/4/1/134108687/lesuzoragejo_molifu.pdfIn PDF document text
    • https://lepitedow.weebly.com/uploads/1/3/4/8/134885181/kiloxepuke-xajub.pdfIn PDF document text
    • https://guxumexowe.weebly.com/uploads/1/3/3/9/133999944/4b6847cf5754db.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/minaxigevani/arquitectura_avanzada_de_computadoras.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxomigo/vovovivimomo.pdfIn PDF document text
    • https://s3.amazonaws.com/vizegemawokaxe/jaxidupabesas.pdfIn PDF document text
    • https://s3.amazonaws.com/bokelur/55261090253.pdfIn PDF document text
    • https://s3.amazonaws.com/tobito/angielski_swka_wiczenia.pdfIn PDF document text
    • https://s3.amazonaws.com/xalexojaxipud/boutique_informatique_bejaia.pdfIn PDF document text
    • https://s3.amazonaws.com/tolivajupeku/how_to_be_strong_mentally_quotes.pdfIn PDF document text
    • https://s3.amazonaws.com/vatakefojunib/rofokojawafizowafuv.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_off0000bc16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC16 5280 bytes
SHA-256: 829dc25b7581286829c147929989d050d22d1b7fb6c8004a2258497e4d059cac
font_01_sfnt_off0000cde9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDE9 10400 bytes
SHA-256: fb5ef01a899271c408d0079672421cea54c0ee0da1ec4c972e673634c557d4e7