Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ebc312683afbbd3…

MALICIOUS

PDF

59.8 KB Created: 2020-11-24 04:46:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 37ddd064178c3ab1d84051e28e0bce05 SHA-1: de4da86f503b647347303da66087b0da925eff08 SHA-256: 1ebc312683afbbd3e07faa940004ff41c271508a78b62d03758cb5aa878f818c
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • 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.
  • 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://ggtraff.ru/strik?utm_term=tracteur+mc+cormick+137+d In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366034/normal_5f908fb6c8fe5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380682/normal_5f9e3e084c5d6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381748/normal_5f98383e5f68f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454811/normal_5fb8434d75a95.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380857/normal_5f8e25603d0b7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385434/normal_5f9bae7808fde.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374839/normal_5fa54c6154b09.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493549/normal_5fb4bd0105753.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456389/normal_5fb7bb966b98a.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/bizamesuwepe/as_medicamentos_especiais.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b338096-6ad2-4ede-82ff-6b6c43d30b47/gopifobowomir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a2df04b-c70a-4541-b532-74393ad7bb8c/gikupaz.pdfIn PDF document text
    • https://s3.amazonaws.com/badodemebo/maxtor_one_touch_mini_4_not_recognized_win_10.pdfIn PDF document text
    • https://s3.amazonaws.com/dedinavesute/aviation_english_course.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_off0000ae92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE92 5184 bytes
SHA-256: 3551c5f2cdfe497d548d7f55c870b0b988a2d126b36eb27aa3625d6c88b08b7a
font_01_sfnt_off0000c030.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC030 10184 bytes
SHA-256: 81a4841ff0c3427128da32da835d580361eb47e98ac74b9377d2ce924d67d74d

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