Malicious PDF — malware analysis report

Static analysis result for SHA-256 5588b90b86f8c00b…

MALICIOUS

PDF

78.8 KB Created: 2020-12-26 00:16:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 8469b288d2772925f49b525dd5d26f23 SHA-1: 1b00c21d1f06e0a981e59ac77039f52c34934432 SHA-256: 5588b90b86f8c00bd72f44b516924d60b8b1344b269c4bc8f29eedc404aca8f1
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=camera+for+laptop+software+free+download In PDF document text
    • https://cdn.sqhk.co/palubavuz/rnxiezE/death_road_to_canada_xbox_one_review.pdfIn PDF document text
    • https://cdn.sqhk.co/vowibesep/6IQQ1gf/formula_1_2019_gameplay.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409604/normal_5f9a7938df038.pdfIn PDF document text
    • https://cdn.sqhk.co/jisogixij/LThbmO8/31838353675.pdfIn PDF document text
    • https://cdn.sqhk.co/purovufizu/evogfjj/xizidobemovexetis.pdfIn PDF document text
    • https://cdn.sqhk.co/gebijowokobe/lje1jdq/electronic_components_kit.pdfIn PDF document text
    • https://cdn.sqhk.co/salenasova/iefOhdh/mini_golf_resort_wii_download.pdfIn PDF document text
    • https://cdn.sqhk.co/lixejudazeza/Oihjj7s/football_manager_2020_pre_game_editor_epic.pdfIn PDF document text
    • https://cdn.sqhk.co/xilelawemu/ghZha1g/23292136511.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/3ba8d53e-65db-42a4-9a0c-d216581b07f7/firaweturad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64d13baa-2c8e-4430-8c2b-5493b04d435e/iterate_over_characters_in_string_c.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b54d632-4b84-4755-89d4-aad210d94881/36984010777.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34d1d6b4-0109-49e5-9f51-35e3557f03bd/vuwozuwe.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e8b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8B4 5044 bytes
SHA-256: 89f39a67f9f1ec44d38ec8c9a67b32283057d40b82627b8208a96733080d1126
font_01_sfnt_off0000f9d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9D0 11212 bytes
SHA-256: b49e0d21e0803aeacfaa44057bbfa43753a39f7fcff3eff95839fead0e3f2630
font_02_sfnt_off00011fed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FED 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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