Malicious PDF — malware analysis report

Static analysis result for SHA-256 9914e5aa74dbf3b4…

MALICIOUS

PDF

73.2 KB Created: 2020-11-25 19:24:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: ca2655ee28c813b90a0b2ec27751c831 SHA-1: 82263f150c64cec901237c37394b33961c8b30d5 SHA-256: 9914e5aa74dbf3b435c1cb869c93c893e53640f4fd7032ef9e9550e58d9fcf3c
154 Risk Score

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'. This URL is likely used to lure victims to a malicious site. The ML classifier also flagged this PDF with high confidence, and ClamAV detected it as a phishing trojan. No scripts were extracted, but the embedded URL is the primary indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=fotos+de+las+muertas+de+juarez In PDF document text
    • https://cdn-cms.f-static.net/uploads/4420029/normal_5fb48ef73e2a4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403948/normal_5f986d91cf4b0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373520/normal_5f8ac4b998e1e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411493/normal_5fa0534ed79ba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454824/normal_5fa9dec662f08.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418781/normal_5fade76c4461f.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/sevoga/92593515597.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/edfb2bae-11f2-439c-84e5-1aa69bd766e4/zedogazag.pdfIn PDF document text
    • https://s3.amazonaws.com/tokatefozude/cohort_analysis_report_google_analytics.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e478a0fe-2d7e-46f4-ba3d-da45d3aaeee4/14845533961.pdfIn PDF document text
    • https://s3.amazonaws.com/tujeviwakirawu/binomial_calculator_emath.pdfIn PDF document text
    • https://s3.amazonaws.com/nolarifaforuxop/maxeze.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0f2f4e9-5ce4-4d0f-bd25-63e6b9a5d3af/73906511579.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2bbcbd39-991c-4f3e-b02a-6643a9cd3d79/kogalom.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_off0000e1e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1E1 5052 bytes
SHA-256: 0aabccf149b6563ce3c281217e5bcd83c7065030ddfb397a64516d9689d21729
font_01_sfnt_off0000f301.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF301 10920 bytes
SHA-256: af42756eeefd90b3196d67e138c06922764d8f420800e5a8fc4fa59d21d0828f

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