Malicious PDF — malware analysis report

Static analysis result for SHA-256 e37fa03a90724239…

MALICIOUS

PDF

73.0 KB Created: 2021-02-11 07:58:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 123db68f65e32c5d7973284d216a06a5 SHA-1: c41558f4658e1f495d52ce80502a3614bc461c1a SHA-256: e37fa03a9072423963737eced85f6d6045f3a6ebb0d79dbc2b18c6a03e6813a8
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://maypoin.ru/aws?utm_term=fusionner+pdf+avec+adobe+reader+xi PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4474445/normal_5ff3b9c7978d7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426409/normal_601ef7f186f55.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369797/normal_6014a41258786.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477386/normal_6009318693836.pdfIn PDF document text
    • http://strapslap.online/japezafariburibumejazosazdoawd.pdfIn PDF document text
    • http://mail-autoscout24.net/reporting_deceased_estate_formsav3qd.pdfIn PDF document text
    • http://how2clever.com/gufujesibekixuzovubegipub9cjo.pdfIn PDF document text
    • http://skout.tech/ajay_devgan_dilwale_song_freedp5lg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403128/normal_5fd6854fae826.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/tifuwuw/bought_synonym_formal.pdfIn PDF document text
    • https://s3.amazonaws.com/muvazi/3647001457.pdfIn PDF document text
    • https://s3.amazonaws.com/daxemo/josaa_medical_certificate_format.pdfIn PDF document text
    • https://s3.amazonaws.com/guxosa/national_fire_incident_reporting_system_login.pdfIn PDF document text
    • https://s3.amazonaws.com/wixamupelinere/natukuwatavuvelabegogarin.pdfIn PDF document text
    • https://s3.amazonaws.com/furunumaroxun/91603584265.pdfIn PDF document text
    • https://s3.amazonaws.com/vonuxagupeduze/bojolonamupobise.pdfIn PDF document text
    • https://s3.amazonaws.com/xenavuxa/binary_to_decimal_examples_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/levovod/becker_cpa_review.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_off0000e0a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0A9 5340 bytes
SHA-256: 4f0aa501507296acfcb88430722c08bc032defee8644f4e6ccea6e79979d4b4a
font_01_sfnt_off0000f2ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2EA 11100 bytes
SHA-256: 183863050adceda7d4933e0ce62fa97c77bdd45c5c68cfed86fbcafceb09b8ad