Malicious PDF — malware analysis report

Static analysis result for SHA-256 c463d4cebd7eea02…

MALICIOUS

PDF

67.1 KB Created: 2020-12-09 00:45:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 7f31b0595c171650d37edf63bebeb675 SHA-1: 60a6331204d20779edebd91f42edd408ac901190 SHA-256: c463d4cebd7eea0257b43cd9994d64235bc5371883398794857ebbed4cae14b2
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 presented in the document body, suggesting a phishing attempt to redirect the user to a malicious site. The ML classifier also strongly flagged this PDF as malicious.

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=mary+bridge+children%2527s+hospital In PDF document text
    • https://cdn-cms.f-static.net/uploads/4372721/normal_5fbe1a6d40382.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375694/normal_5f8fa9ea624e9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387919/normal_5fbba5b8d4742.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406782/normal_5fc6568069938.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385415/normal_5fc28a8e9fb6d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369494/normal_5f8a7694e74b9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388835/normal_5fa469114ab5d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490132/normal_5fba0559a013e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc56b1160f2895dc1062760/t/5fcf48590ff3944fc5571a6e/1607419994872/happy_birthday_hubby_cake_images_download.pdfIn PDF document text
    • https://s3.amazonaws.com/mozedijiz/company_profile_india.pdfIn PDF document text
    • https://s3.amazonaws.com/jizubisetebof/animasi_jepang_bergerak.pdfIn PDF document text
    • https://s3.amazonaws.com/janodojivi/bullet_force_unblocked_unity_web_ul.pdfIn PDF document text
    • https://s3.amazonaws.com/lawakux/arc_length_and_sector_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/jixerubowi/how_to_boot_linux_from_usb_on_chromebook.pdfIn PDF document text
    • https://s3.amazonaws.com/buwosevax/palaparub.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_off0000c9af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9AF 5616 bytes
SHA-256: aa83482c837a2719f2701a412e64c4245ff91cbe42d332a10ca96150be135409
font_01_sfnt_off0000dcdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCDD 10100 bytes
SHA-256: 58032f4dcd5c725b7656af18c33da2302483e30ea807fe6d1119019e378041ba

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