Malicious PDF — malware analysis report

Static analysis result for SHA-256 59517a67d1d6fd50…

MALICIOUS

PDF

71.2 KB Created: 2020-12-24 22:56:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 02a5d1a2a5139534769fcf7e0d96f649 SHA-1: 2c81d0cf9fb09dc4ccab7fedbe6588d381234f9c SHA-256: 59517a67d1d6fd500757fe9fb93114f35cd87e65d0a784f92b8205959e121c41
154 Risk Score
Tags
free-cdn-ebook-manual-lure

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 'https://cctraff.ru/strik?utm_term=get+lucky+lyrics+mexican'. This indicates the document's primary purpose is to lure the user to a potentially harmful external site. The ML classifier also strongly flagged this PDF as malicious, supporting the assessment of a phishing or malware distribution attempt.

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://cctraff.ru/strik?utm_term=get+lucky+lyrics+mexican In PDF document text
    • https://cdn.sqhk.co/tuxisilogok/i0pgiMF/events_and_adventures_houston.pdfIn PDF document text
    • https://cdn.sqhk.co/wodigajamu/d3jiN2F/dimabujupegugab.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/somamere/17058025230.pdfIn PDF document text
    • https://s3.amazonaws.com/falevi/emeryville_sportfishing_fish_report.pdfIn PDF document text
    • https://s3.amazonaws.com/jenisozazewubo/double_negatives_worksheet_1_brave_knights.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cac9d3f9-4306-4e08-94ca-ac67c4a1f0cb/6435635296.pdfIn PDF document text
    • https://s3.amazonaws.com/xumakomowi/54282147240.pdfIn PDF document text
    • https://s3.amazonaws.com/dazovosugev/doturaxivomobitajawapapav.pdfIn PDF document text
    • https://s3.amazonaws.com/zupenafud/mindtap_answers_sociology.pdfIn PDF document text
    • https://s3.amazonaws.com/wunupalezozerud/vadaxibonerikefak.pdfIn PDF document text
    • https://s3.amazonaws.com/julexekubaj/birthday_wishes_for_teacher_free.pdfIn PDF document text
    • https://s3.amazonaws.com/nitatotol/lisen.pdfIn PDF document text
    • https://s3.amazonaws.com/xapota/medical_report_template_letter.pdfIn PDF document text
    • https://s3.amazonaws.com/voxipanovigepiv/free_tri_merge_credit_report_with_scores.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_off0000dbb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBB8 5208 bytes
SHA-256: 88b10155e36cb6e69da3afa306022664861c32411d66a46e74c54d58096c293e
font_01_sfnt_off0000ed6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED6C 10148 bytes
SHA-256: 6d0a24269ac85a1426caa6ee6199bce3da9fe937cf30895f638159f2817d44ba

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