Malicious PDF — malware analysis report

Static analysis result for SHA-256 e98470ea82563fab…

MALICIOUS

PDF

66.5 KB Created: 2020-12-23 02:35:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 2acb4d25a7935184711f93dce27730d6 SHA-1: ea1cfc21211e3869f574a78bf50f5b57a5721129 SHA-256: e98470ea82563fabe209aed623c993fafa6fda9dae96a5a7c552a326bdc1c558
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a high number of external links, with one identified as a potential phishing or malware distribution URL. ClamAV detection as 'Pdf.Phishing.Trojan' strongly suggests malicious intent. The presence of embedded URLs and the overall structure indicate a phishing or downloader attack, likely delivered via email attachment.

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://trafffi.ru/strik?utm_term=jump+ball+definition PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369762/normal_5f948668f1214.pdfIn PDF document text
    • https://debaduvevuw.weebly.com/uploads/1/3/4/3/134383420/739626.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fe12d71b3a45d4e1c37cccc/t/5fe19fc725b65769547dccc9/1608622024229/invesco_perpetual_uk_smaller_companies_annual_report.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fe26e48d8494d53ba49fc91/t/5fe274ac251d817c6eb4fc41/1608676525852/accountancy_book_class_12_free.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc656352cf09257bd907783/t/5fd094145ec17a4c66949738/1607504916991/free_download_eurodance_90_remix_mp3.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59ccca45-f22c-4fd6-ab10-a11382a38bf3/alita_battle_angel_3d_blu_ray_release_date.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fced2d99697205d6f64f41c/t/5fd139a51d1a2b7683fea71a/1607547301388/95169358672.pdfIn PDF document text
    • https://s3.amazonaws.com/nafibanefexex/26409806805.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fce9b08c70c0163892578ce/t/5fd6fcd2481cfa31adddb6e1/1607924947178/eclectic_paradigm_thesis.pdfIn PDF document text
    • https://s3.amazonaws.com/farefasejikap/12455945527.pdfIn PDF document text
    • https://s3.amazonaws.com/waxapoz/67705517566.pdfIn PDF document text
    • https://s3.amazonaws.com/sefiwegegagu/57072754727.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_off0000c946.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC946 5040 bytes
SHA-256: 19d4f7435e02838819b0d3314da26629dc320a259b2a85bd3e24e38e972f4d91
font_01_sfnt_off0000da5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA5A 10292 bytes
SHA-256: 13ee66812614ac6ace8981b6ab57532255ee6a45f670971570d3a686be698d75

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