Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6a9c870dbe16daa…

MALICIOUS

PDF

75.2 KB Created: 2020-11-11 22:09:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: d239e134188a2e42da9a4211a91667d7 SHA-1: 7efac30afe5f99e871d70f7feeaa77f15311367a SHA-256: e6a9c870dbe16daa7a43c3f279cb89784101b915aaa50a8c69f1e57a7ad23b8d
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://traffset.ru/aws?utm_term=roman+catechism+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4422392/normal_5f9cbe9b231f7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385204/normal_5f9b8e452b772.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445129/normal_5fa0b5ec2da4e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393624/normal_5fa99b1701f31.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402504/normal_5f96b7718d07d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370071/normal_5f8a1f20e0020.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/tekujel/pudeweririvebomubodu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c58c785-eb97-4e2d-88b1-8eb3d29f9908/97095815816.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20f7b800-7a1e-4d97-968a-85b4cac8f774/gulefijubi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad431326-88b3-4a62-9080-05d9e1bcf46d/skyblock_server_ip_s.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c3ddbb3-6228-43b6-89e1-76511aff647c/motorguide_109_tour_edition_parts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43ffe4c4-2b66-4a24-af5d-44318031f654/nobopunutebena.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dcdc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCDC 5064 bytes
SHA-256: 8583bdb9d6a54bba97e6114cfba32f5a929f340f6250f5f28f1576c1854fe61e
font_01_sfnt_off0000ede6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDE6 10764 bytes
SHA-256: 061c3e76b42a01246e16951a7a8a664c4ebe0e967171943d6eb32d5d415c69f9
font_02_sfnt_off0001124c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1124C 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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