Malicious PDF — malware analysis report

Static analysis result for SHA-256 b752b956a32df57e…

MALICIOUS

PDF

73.9 KB Created: 2020-12-28 21:54:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: 57707ea0a752430affdc027b151caf8c SHA-1: 274ce63c2fd4f7caae6f890a19b85ace482cab98 SHA-256: b752b956a32df57eedca0f985b88bf1fdf2e25ce6534e2c32aa89c4a1fb1b9d7
194 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://traffking.ru/123?utm_term=persepolis+movie+online+free+english In PDF document text
    • https://cdn-cms.f-static.net/uploads/4487419/normal_5fb2d129bf65d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450890/normal_5fe159b26823d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455196/normal_5fb8a1d850434.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4493602/normal_5fce8f6ec18d3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450347/normal_5fb3df33d6977.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446380/normal_5fb5a40eb2bda.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366406/normal_5f872a63021f8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393890/normal_5fa692f0a4690.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454668/normal_5f9ffad4441b3.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/142078b8-f8b5-42e8-b641-ca51e4d3436b/7871001313.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ecd46fe-737a-4d55-a25e-87361867f2e9/popular_mechanics_archives.pdfIn PDF document text
    • https://s3.amazonaws.com/zedilegol/crack_serial_number_abbyy_transformer_3._0.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95cbb7ac-248d-4e34-8920-7c8d12f746c7/sidney_lumet_making_movies.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d875d546-c7bb-46ec-a998-592750bed10c/courier_service_pricing_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/zepifudoxapo/10240691622.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_off0000e474.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE474 5164 bytes
SHA-256: 6f62c41f682b18b8f2eb3c1cfa333f435141687ea9391877df4c69008d19c4a3
font_01_sfnt_off0000f5e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5E9 10868 bytes
SHA-256: 2a6b67eaf2051dd349fdde385e940e20bacc63e77b359ccfd2c6e7b86f745e86

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