Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b0d88c1f15eb6de…

MALICIOUS

PDF

57.9 KB Created: 2020-11-11 02:14:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: 104000ac163c515d427ec1aec6c49dd3 SHA-1: d39ea0830dd267ae5e91d81ecb829c55ac4c8c2e SHA-256: 7b0d88c1f15eb6dedb6ad8675b548b2b63f22dc1a2b0da9ac4bebf935619714d
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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?keyword=sushi+monster+menu In PDF document text
    • https://cdn-cms.f-static.net/uploads/4392660/normal_5f9e7595791d3.pdfIn PDF document text
    • https://fozafilamo.weebly.com/uploads/1/3/4/3/134314768/5464397.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413454/normal_5f9bca5a4c9ca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387920/normal_5f9ca481c9977.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376126/normal_5f8be0471385a.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/ligewajinaxi.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/luxelula/nizoxu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6364adc3-8114-4666-8c98-bc7e10e2c17f/10977671967.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/121a3ec1-7ca0-42ef-ae39-a01ae68288d4/jadenenivaxonaxulewunezu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76ec143c-046a-4fe8-9e84-c212f0e4721d/14031463382.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39e8e0b2-69a9-4873-8cb6-e7593426adbe/work_cited_sample_mla.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_off0000a827.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA827 4788 bytes
SHA-256: 8649c7281e7f06028aacc7fd9cf0c585eb09b1cd5722c76ba505e741335fec94
font_01_sfnt_off0000b840.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB840 10276 bytes
SHA-256: eb3b7769a0f1f29da674abd96af54b95a6e0e7069ec4315f49c6af89843e01fd