Malicious PDF — malware analysis report

Static analysis result for SHA-256 f09b266b83e406df…

MALICIOUS

PDF

74.6 KB Created: 2021-01-01 23:25:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: ec0eac0cb199732b4aedf9c21a00ac68 SHA-1: 25762dc29d6c251ee86cd79bca57ddf75d0e70ae SHA-256: f09b266b83e406df0c192b4d6dd7d8f330fca8943981df921173a2476c3a6088
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://trafficel.ru/wb?keyword=how%20to%20make%20mask%20chain%20with%20beads PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4376105/normal_5fad6d2d825cb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453144/normal_5fd9e68d87cdb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377095/normal_5fbae2016b028.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477373/normal_5fb01acf7fa31.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392860/normal_5fc87e530b312.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367947/normal_5f914a3d3abf8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478133/normal_5fcd527e93719.pdfIn PDF document text
    • https://cdn.sqhk.co/bosejadukifo/hgdgdid/switzerland_currency_before_euro_in_spanish.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/16e22898-214d-45d8-930a-d05121f03bdc/36160800554.pdfIn PDF document text
    • https://s3.amazonaws.com/wopari/begux.pdfIn PDF document text
    • https://s3.amazonaws.com/tumasun/26844571959.pdfIn PDF document text
    • https://s3.amazonaws.com/lososimap/money_borrowed_contracts_template.pdfIn PDF document text
    • https://s3.amazonaws.com/naxizugenabi/95997625437.pdfIn PDF document text
    • https://s3.amazonaws.com/genedonapubefe/zunulokem.pdfIn PDF document text
    • https://s3.amazonaws.com/tumasun/dreamweaver_free_softonic.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_off0000e87e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE87E 5308 bytes
SHA-256: ef7bb4a9aaee45df0ed9ddcded6f0eeeacb5d18a7d23ad07debf710b11719ce6
font_01_sfnt_off0000fa71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA71 10272 bytes
SHA-256: ce77f61f9c94808e3b61ecbde23a200094c0c3ea06302187b316c79c5956e0fe