Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ab539146dd31d46…

MALICIOUS

PDF

67.9 KB Created: 2020-12-09 19:24:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 1f39d22f5b2dd32b88a6b0fb45885e7d SHA-1: 4938d19f2c53f270d9e22d1b39f2a4ad8cc80125 SHA-256: 9ab539146dd31d46c6a87b62f29ab5e5b11c7084addc7bf69aaeb1d31c45040b
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://gettraff.ru/123?utm_term=emc+solutions+enabler In PDF document text
    • https://cdn-cms.f-static.net/uploads/4476015/normal_5faf910c8b0b0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369150/normal_5f9687a87251a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374979/normal_5f8d63fa7a4a8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402262/normal_5fc70ffe93a35.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390996/normal_5f937eec07a71.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/leributafa/89446358842.pdfIn PDF document text
    • https://s3.amazonaws.com/tibanepoxilibud/39292130845.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7ffdb1c-8636-402f-9b1e-1344ef195de3/91455576538.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7fa00950-03d9-43d7-9c5b-6aa819df422a/74494328364.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7cdd6ee2-b12f-4ccc-8781-5d3ec94c6c16/how_you_in_asl.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab1741ed-ffb1-45d3-9588-b1b052a6f58a/pathfinder_variant_channeling_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14ae32ad-686d-4ca2-abe4-8221dab537a8/capsulitis_adhesiva_fisiopatologia.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/13aafb70-0b35-4f79-95e4-f1fba084ca0a/disisajiwaperekawe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/21c3b563-1299-4b43-9cd4-a7b62b24eeaa/spotify_premium_apk_mod_offline_2017.pdfIn PDF document text
    • https://s3.amazonaws.com/tajimipojimo/juwokunikawabupipizabilu.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

Related samples 5

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cbf5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBF5 5040 bytes
SHA-256: 99a966fdfa19ee63d116c4d3949e9a5f2b823bb44e3ea4906d8c1760b6d0df04
font_01_sfnt_off0000dd04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD04 11056 bytes
SHA-256: 3a9725c9bebfe71d3d2de0eecb8f9782f40be48d6b8b37ca6eaa0da2c630870e

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