Malicious PDF — malware analysis report

Static analysis result for SHA-256 f61171cfe7d664f0…

MALICIOUS

PDF

70.1 KB Created: 2021-02-16 05:30:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: c7693e62dbd7ab5778af0cd291ae067a SHA-1: 13e61b4a2acea29ffc0d7879bc2859abbf38f204 SHA-256: f61171cfe7d664f016a9be8f8058590b79881da1ec9476231eb6716b9af85920
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://druttle.ru/123?utm_term=pance+prep+pearls+question+book PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4451356/normal_5fca091722aac.pdfIn PDF document text
    • http://inter-kalinka.ru/nolixuzoxumipagoteladuwy4o6j.pdfIn PDF document text
    • http://sunepoxuvigos.66ghz.com/fuxafixusitevumupar.pdfIn PDF document text
    • http://wojifos.22web.org/school_uniforms_should_be_mandatory_debate.pdfIn PDF document text
    • http://mon-cmbretagne.com/pounds_to_ounces_calculatoraj03i.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/jenisozazewubo/56734718997.pdfIn PDF document text
    • http://boludit.rf.gd/487048447.pdfIn PDF document text
    • https://s3.amazonaws.com/safenalavojuwu/cadena_de_suministro_unam.pdfIn PDF document text
    • https://s3.amazonaws.com/napisakaluja/imdb_box_office_report_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/fusidejebi/kitabowilamimipekuput.pdfIn PDF document text
    • https://s3.amazonaws.com/resabomibogodaw/zaneget.pdfIn PDF document text
    • https://s3.amazonaws.com/bugutaj/rokamamezovo.pdfIn PDF document text
    • https://s3.amazonaws.com/ropidadegaxut/kadhalithal_anandham_video_song_free.pdfIn PDF document text
    • https://s3.amazonaws.com/webipejonavuv/passive_causative_form_of_the_verb.pdfIn PDF document text
    • https://s3.amazonaws.com/vexosafugunu/18358652732.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_off0000d349.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD349 5256 bytes
SHA-256: 941284017312885419abc4e92c3468d638affad59b6bfd06b4fefb131c610c0d
font_01_sfnt_off0000e53c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE53C 11308 bytes
SHA-256: 7f5b01f7d35e37ce86c1b5694d1619e03576118d43d9688693e2bd4d1740abb4