Malicious PDF — malware analysis report

Static analysis result for SHA-256 59181c7318348822…

MALICIOUS

PDF

45.0 KB Created: 2020-11-05 04:30:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 15392e7d707c917540c45a4f05e4034f SHA-1: 93f13656d302bb75d3fd4a1f5809ac309bc2d39e SHA-256: 59181c73183488229bf25a80faa9903939371e37975bedf8721d3a4af9d8eeb5
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://ttraff.me/123?keyword=80th+anniversary+batman+missions In PDF document text
    • https://cdn-cms.f-static.net/uploads/4383302/normal_5f962cd359910.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369781/normal_5f8ffaeb8441b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387699/normal_5f9ad4ede626b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446770/normal_5f9f8c4042a6c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374704/normal_5f8abf9d50d99.pdfIn PDF document text
    • https://turomanusogagi.weebly.com/uploads/1/3/1/4/131453559/5887223.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/fajeloninesitel/57294137084.pdfIn PDF document text
    • https://s3.amazonaws.com/mipizaju/35637750155.pdfIn PDF document text
    • https://s3.amazonaws.com/xukidosifixi/zaffron_mediterranean_grill_hummus_bar.pdfIn PDF document text
    • https://s3.amazonaws.com/sefiwegegagu/wosumixopavuwobogoba.pdfIn PDF document text
    • https://s3.amazonaws.com/pizivurapab/23808747512.pdfIn PDF document text
    • https://s3.amazonaws.com/risisipajole/zoxifitere.pdfIn PDF document text
    • https://s3.amazonaws.com/sifawekujiki/92495193069.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004bea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4BEA 5436 bytes
SHA-256: a813666ed2f614e2bca968c6e2eb69afcb7976aca49119bf7fe00f6105e65453
font_01_sfnt_off00005e38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E38 5240 bytes
SHA-256: 46348d83854330478d754ff265edccd152a4a74f6b89d3278d094fcb07303bab
font_02_sfnt_off00006d15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D15 10380 bytes
SHA-256: 58dd3cfecc5f6b9a8a9acad55e33303b33b8c5518c8d9e6354b5b34687ca7773
font_03_sfnt_off00009099.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9099 16392 bytes
SHA-256: 8d9529fca8e49fd747a132c86257b3f003f6793d9f50918e3e02e184cbe99d44

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