Malicious PDF — malware analysis report

Static analysis result for SHA-256 466c00854722c4f7…

MALICIOUS

PDF

73.0 KB Created: 2020-12-19 16:05:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 36faa9f7b62712ed447f593b8baf565a SHA-1: 988e256b07250f3af00251f8bc206c56f771df0b SHA-256: 466c00854722c4f7df628288e7b83b62bfb71bdf584afbbbd4590328ae26f560
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a critical heuristic firing indicating it's a malicious redirector link, pointing to 'https://gettraff.ru/aws?utm_term=internationalization+of+business+pdf'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the nature of the redirector suggests an attempt to lure the user to a malicious site, consistent with phishing or malware delivery via a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://gettraff.ru/aws?utm_term=internationalization+of+business+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4391326/normal_5f9789e431eba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427499/normal_5fa098af4aa04.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367312/normal_5fd785259fae0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457320/normal_5fae0b29e36b5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405193/normal_5fd27c458e845.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450504/normal_5fce1e63ec976.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424985/normal_5fc69d58a38a8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366007/normal_5f886fefb5bd5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492275/normal_5fafadd817da7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1dede0e-b3e0-4625-9dff-a95630435997/wagelefagususepelorar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a89beb7c-7525-4f02-9761-b250f016fe91/kuseraxiwotu.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_off0000e101.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE101 5160 bytes
SHA-256: bb08ae326621790ae33d623555493891d78082266ef915ad8fbf98029b5920be
font_01_sfnt_off0000f29f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF29F 11032 bytes
SHA-256: c27d7754b8e5753ab4063f739a4a5fbaa2372d36792adc67b6dfcb2f3f568ba5

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