Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd3709e3d385b8c6…

MALICIOUS

PDF

62.9 KB Created: 2020-12-04 21:33:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 1d1ecec86b4775c608fbc16a5c1a1739 SHA-1: d64dfcc368cffd6381e2de3fa797777512ad1fbc SHA-256: fd3709e3d385b8c6ef5b21e251af2069226708817f868bbd5409b2b583eea313
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating a malicious redirector link to 'ggtraff.ru'. This URL is likely used to host phishing content or distribute further malware. 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, aligning with spearphishing tactics.

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/aws?utm_term=evolutionary+arms+race+answer+key In PDF document text
    • https://kifirazet.weebly.com/uploads/1/3/4/7/134715796/buweb_pesexidobiler_balowepomisuki.pdfIn PDF document text
    • https://fisalusul.weebly.com/uploads/1/3/4/3/134341538/f0d36e6aca9224.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/nisoxow/xuwikumalatelul.pdfIn PDF document text
    • https://s3.amazonaws.com/feseni/bam_bam_bole_video_song.pdfIn PDF document text
    • https://s3.amazonaws.com/bejideba/23554986655.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/37009297994.pdfIn PDF document text
    • https://s3.amazonaws.com/mubemutolewe/rubuzigadimidosugovamezig.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5112e12facd59cec7c30d/t/5fc557fe3c6ccf69f3109ca0/1606768640411/24116155863.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcf79968bfc518616757ae/1606219673982/61631594217.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0d135bf71053ccb0fc630/t/5fc19747a97599144e33a2d4/1606522695901/vidudeseralisedorawa.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/zopenureputikazagetixo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/12862f59-cfcf-41d9-8859-4d3289bfaf90/digestive_system_flow_chart_worksheet.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_off0000b950.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB950 5220 bytes
SHA-256: 7e3d9486322e3e67f3570091eac6d4fba2d14d71b2afc1c02f1d54bf6fddc11d
font_01_sfnt_off0000cb1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB1C 10596 bytes
SHA-256: 29bef2efecfcdcae7ea4c36b7a7bfdc24a8a3017607adbd0869584efe25609a5

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