Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bc39d9e344b13f1…

MALICIOUS

PDF

72.8 KB Created: 2021-02-16 08:55:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 32b56633ebfe0c21cf59fa09a5664fd2 SHA-1: 5ab4c22b58f9fc8772cae122db25fdb193549b80 SHA-256: 5bc39d9e344b13f1587b4af4a7469dac94e616c9e7971fd0ab4f342c75dc84f8
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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/wix?keyword=toshiba+satellite+c55+manual PDF link annotation
    • https://vowawekalumuz.weebly.com/uploads/1/3/5/3/135304311/1667085.pdfIn PDF document text
    • https://sefusozikoju.weebly.com/uploads/1/3/4/3/134366316/mipubimowobunu-senitemezila-bazezewuna.pdfIn PDF document text
    • https://nazokorebuvawir.weebly.com/uploads/1/3/0/7/130776058/a40082c5.pdfIn PDF document text
    • https://lejonelawubuw.weebly.com/uploads/1/3/1/4/131453657/zugepoj_jiwapipivexux_jebawiva.pdfIn PDF document text
    • https://digokevun.weebly.com/uploads/1/3/4/7/134747151/e334690cf.pdfIn PDF document text
    • https://barefofu.weebly.com/uploads/1/3/4/4/134492989/ruxutabixedelu-midutekojusavo-tulifuxawuxe.pdfIn PDF document text
    • https://fufilotaniwa.weebly.com/uploads/1/3/5/3/135321354/jimozigakuvapube.pdfIn PDF document text
    • https://talotemeve.weebly.com/uploads/1/3/1/6/131606578/vudidifexi.pdfIn PDF document text
    • https://xunerekube.weebly.com/uploads/1/3/0/7/130739532/nezoja.pdfIn PDF document text
    • https://radifepibonavu.weebly.com/uploads/1/3/2/7/132712096/7350584.pdfIn PDF document text
    • https://jazebaza.weebly.com/uploads/1/3/4/6/134662006/f63214ea58.pdfIn PDF document text
    • https://lefiletigej.weebly.com/uploads/1/3/4/5/134597596/dijiba.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/bidivo/dividing_unit_fractions_by_whole_numbers_worksheet.pdfIn PDF document text
    • http://jilabof.epizy.com/25161672380.pdfIn PDF document text
    • https://s3.amazonaws.com/wapabefizosumi/ranufonoranale.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxepiduded/corrective_preventive_action_log_sheet.pdfIn PDF document text
    • http://ribitotuv.epizy.com/17204889571.pdfIn PDF document text
    • http://lepugip.epizy.com/free_apache_server_for_php.pdfIn PDF document text
    • https://s3.amazonaws.com/jepavilutabilel/lytic_life_cycle_of_bacteriophage.pdfIn PDF document text
    • https://s3.amazonaws.com/bejideba/thailand_cambodia_vietnam_travel_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/juwofuxufijup/bangla_news_channel.pdfIn PDF document text
    • https://s3.amazonaws.com/dazovosugev/cinemood_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/baritexovopa/dulefexofefubulapefoteme.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_off0000e0bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0BD 5156 bytes
SHA-256: 2d8c6cb5cde3269e2c92b08e72036b22ef49a34f0af273aa2cd751692e0ea8ac
font_01_sfnt_off0000f22b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF22B 10252 bytes
SHA-256: 981377030c181e64419aba078f5f6783853a6e4cf85c7247c73bc2f75e0e033c

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