Malicious PDF — malware analysis report

Static analysis result for SHA-256 d07bc1f256dea224…

MALICIOUS

PDF

70.9 KB Created: 2020-12-15 19:59:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: fb210f64f564ad019688c9c742f0ac4b SHA-1: b77c0158529fa8dbeef16a0d54d1187ec98851df SHA-256: d07bc1f256dea2244fe37bf31a334c95f712e29dcefcdad96c9740e513aacdf6
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 0.9995

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/aws?utm_term=event+budget+spreadsheet+template+free In PDF document text
    • https://cdn-cms.f-static.net/uploads/4378853/normal_5fa5d8c068213.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416128/normal_5fc091d21cc1f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376359/normal_5fd7b516aa7c7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418191/normal_5fb41c72969da.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366666/normal_5f875dcb7b526.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://static1.squarespace.com/static/5fc0ba3b0a2757459be1f9cb/t/5fc4134ff81c9a2a0c21a995/1606685519321/vududitisusufole.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea13e475-364a-458f-af0d-86d64b953874/geberimifuvonirabof.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5349e3dfdd95b60f1467b/t/5fd671f3154d727871ee04bb/1607889396606/clang_implicit_instantiation_of_undefined_template.pdfIn PDF document text
    • https://s3.amazonaws.com/vuzufexarevima/byrnes_high_school_nc.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc14892f9866f3fd2d6f995/t/5fcbb4a76e74d26c6f052181/1607185577206/zemosuke.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cda5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDA5 5336 bytes
SHA-256: cdbb08026e4bccf74d82f49ca00f25f4eb75b1772869e2b825ff1169dc62ba7a
font_01_sfnt_off0000df98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF98 9772 bytes
SHA-256: f4bf566b855b53c58e93c8708795a129e590b3de693ecd8d2a27675435d81c9f
font_02_sfnt_off000100e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100E2 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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