Malicious PDF — malware analysis report

Static analysis result for SHA-256 2abd8e0dbcaecabc…

MALICIOUS

PDF

78.9 KB Created: 2020-11-20 00:02:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: bd6e77b3a895d7cbea5ab64a286507cf SHA-1: 281cc25158647b9bc002446a79f4380bda9dde61 SHA-256: 2abd8e0dbcaecabc909b6732a8fc8d8d24d18a04ac49340d873667a3a42a803c
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://ggtraff.ru/strik?utm_term=lista+de+capitulos+hora+de+aventura'. This indicates the document's primary purpose is to lure users to this malicious site. The ML classifier also strongly flagged this PDF as malicious, supporting the phishing or malware distribution intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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=lista+de+capitulos+hora+de+aventura In PDF document text
    • https://cdn-cms.f-static.net/uploads/4427538/normal_5fa0867c01a7d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366036/normal_5f99f4a47c416.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444850/normal_5fa1527f36b1a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387706/normal_5f9cc0be6d5ac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369333/normal_5f92e0ad96822.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384152/normal_5f9041654ad82.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370077/normal_5f8c72ad4d377.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390366/normal_5f9f33f066c6f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366344/normal_5f8f6fbe6d3f7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407086/normal_5f9928932baf5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457604/normal_5fa6e26e4f937.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369189/normal_5fa815d0e0c75.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/e4146f13-030d-4684-91e9-095f7ef1c24d/musudobafe.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/94806116058.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91c44936-1cc8-4d70-a3f1-091465092cd1/manual_calefont_splendid_master_6_litros.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7024d063-bc71-44c7-a38e-fa096a1ee683/zuvavowoxubujexelez.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d26d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD26D 5160 bytes
SHA-256: 38de9cd3ccf7328732890ac204e700b82f443379c86b7198434099616ec65657
font_01_sfnt_off0000e3f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3F5 1764 bytes
SHA-256: 339184480b2d580b8c849f6fbdd4c31ba853083ae7fce714f3974b13ef06830d
font_02_sfnt_off0000ecbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECBB 11564 bytes
SHA-256: 86afc0408228371bd867ecbfd2c6bb3f806c37891c2bc959439730ba76e19f69
font_03_sfnt_off00011289.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11289 17640 bytes
SHA-256: 150147068d93a853b1b9b5bf6be532c5528f66aa3aec7dd8b5ec1b4c50ed4963

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