Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2c00ad1d29833bc…

MALICIOUS

PDF

73.7 KB Created: 2020-11-19 00:36:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: d3c0034504017fbce2e91d6051cbd120 SHA-1: e2d9a6f8c2654590ddfb06c12fe64a3d5c83b52a SHA-256: c2c00ad1d29833bccdc2c03cfd47acfc3f943d610f2c99052ca98b0b59f00662
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 for a malicious redirector link pointing to 'ggtraff.ru'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the presence of a malicious URL within the document body suggests an attempt to redirect the user to a malicious site, likely for phishing or to download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/123?utm_term=retaining+wall+design+guide+uk In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366376/normal_5f8ce4a23d1cb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375890/normal_5fb4c5992caa1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486566/normal_5faab4bb35fba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386094/normal_5fb59a7e9b486.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494165/normal_5faa3606aabf9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414339/normal_5fa0d6f66dea4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387412/normal_5f990e9b0d923.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383460/normal_5f8e36872938d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471096/normal_5fa918c872070.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://uploads.strikinglycdn.com/files/a0ac3c23-1392-4785-a010-325a061e1b57/silent_hill_origins_psp_iso_espaol.pdfIn PDF document text
    • https://s3.amazonaws.com/lejivugeleguwod/49874542964.pdfIn PDF document text
    • https://s3.amazonaws.com/tabobujimo/counselling_case_study_examples.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ffcee6d4-8c3f-4ccf-876e-8346ed654662/thermochemistry_review_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/jarapemusukodigo.pdfIn PDF document text
    • https://s3.amazonaws.com/nitatotol/83720789521.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_off0000d1a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1A1 4832 bytes
SHA-256: 305154bfa39d58c0c2f345c45505906f1ecd1824ab6489bfa27fae07f6c7375f
font_01_sfnt_off0000e22d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE22D 12136 bytes
SHA-256: 31a372d3fc61e896b1945c66af780e19e4ab0c8bb25ab1cd7a705d4850401ad4
font_02_sfnt_off00010b4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B4D 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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