Malicious PDF — malware analysis report

Static analysis result for SHA-256 7aaad5f04b295747…

MALICIOUS

PDF

67.6 KB Created: 2020-11-23 12:32:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: f1d3755d0097e458dbaa2e61ad975d3a SHA-1: e5d98067d549210173c4e8bdb38b3438a09e2514 SHA-256: 7aaad5f04b295747edd6a1352e53b5f2ffaf22c533ec16a43f3e09067ff9d6d0
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was detected as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to 'trafftec.ru', which is likely part of a phishing or scam campaign. Although no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest an attempt to redirect the user to a malicious site, likely for credential harvesting or malware delivery.

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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafftec.ru/strik?utm_term=logitech+formula+vibration+feedback+wheel PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4411491/normal_5fa8be10749d1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471240/normal_5fbb4b34d993c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469101/normal_5fb29fad5c947.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412413/normal_5fb5620af3c1a.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/mamukawaxatali/topuzopobuxijupox.pdfIn PDF document text
    • https://s3.amazonaws.com/bajapovogam/gospel_songs_chords_and_lyrics.pdfIn PDF document text
    • https://s3.amazonaws.com/xefezesebusu/flac_cue_sheet_editor.pdfIn PDF document text
    • https://s3.amazonaws.com/woxotopapozokev/lanipiwisupikej.pdfIn PDF document text
    • https://s3.amazonaws.com/jubiferekaka/st._clair_county_assessor_property_search.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/203eb26e-dd3d-40a1-bcf2-50dd05af6132/gitij.pdfIn PDF document text
    • https://s3.amazonaws.com/dazuxujepov/dederitefofusudi.pdfIn PDF document text
    • https://s3.amazonaws.com/muvunekagok/jurisdictional_scan_template.pdfIn PDF document text
    • https://s3.amazonaws.com/vabedafozo/15996573011.pdfIn PDF document text
    • https://s3.amazonaws.com/xezujuxoz/using_viagra_before_and_after_pictures.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_off0000c75c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC75C 5552 bytes
SHA-256: fd5e67b341d7e13f01597a68e85be730b53a440d60e2022fc0258106d509a5a7
font_01_sfnt_off0000da35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA35 12072 bytes
SHA-256: 3bb0fcd67bec2a46131d48be8cfe84691a6eb61ef13ac0277369883709bca648

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