Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fe21192549d07e1…

MALICIOUS

PDF

74.3 KB Created: 2020-12-17 05:17:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 081145c6bd0a18f6a3f50e099a0ede24 SHA-1: b795cb7a0c94850affc919ce1420de00d1ca42c7 SHA-256: 0fe21192549d07e105095830aee6e95f0e0d5e9b2edaeb3aa4c350caf9bb2650
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ggtraff.ru, which is likely used to host phishing content or distribute malware. The embedded text, though garbled, suggests a lure related to product searches. The ML classifier and ClamAV detection strongly indicate malicious intent.

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/strik?utm_term=samsung+galaxy+s5+active+battery+near+me In PDF document text
    • https://cdn-cms.f-static.net/uploads/4453333/normal_5fb88a917b18b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483587/normal_5faa6dff91994.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408335/normal_5fc113739076f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366306/normal_5f95a529a8926.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458390/normal_5fa89616cf2db.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369656/normal_5f8e7d206d8fa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405930/normal_5fba324478b9e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406516/normal_5fa9e5db7963e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366628/normal_5fcced1c87d61.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/0b50e1ae-d516-4dd2-ba57-6ac52501f690/zetesizunajiv.pdfIn PDF document text
    • https://s3.amazonaws.com/pajukovuxetu/offline_english_to_japanese_translation_app_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dafed1a7-332a-417f-a921-acc6eb2d41fd/betetojonototivetirenise.pdfIn PDF document text
    • https://s3.amazonaws.com/kuboki/4652823216.pdfIn PDF document text
    • https://s3.amazonaws.com/julaxel/best_apk_mod_site_2020.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_off0000e393.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE393 5716 bytes
SHA-256: aa77d257a8e80b59ad9da83d4954d20677ebbf3a7973d8eadf66f916db613882
font_01_sfnt_off0000f709.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF709 10972 bytes
SHA-256: 1d22656fac3d51035c7590fe52fd7b570cf08fb7e1b6fdba15bbe14e930e292b

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