Malicious PDF — malware analysis report

Static analysis result for SHA-256 8118670886fad749…

MALICIOUS

PDF

63.1 KB Created: 2021-01-05 19:39:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: e64b80ad1bd97d4296dfcffec436cd0b SHA-1: 9082ed09b6b96fbc38618b3dc10c653aef7ae295 SHA-256: 8118670886fad7491716c91f5e364fc4ceed82d2e1e7e8bb7850981f6b5d480f
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 indicating it links to known malicious redirector infrastructure. The primary IOC is the malicious URL which is likely used to deliver a phishing page or a second-stage payload. While no scripts were explicitly extracted, the nature of the PDF and the malicious link suggest an attempt to trick the user into navigating to a harmful site, aligning with phishing or malware distribution tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://gettraff.ru/123?utm_term=sony+cyber+shot+charger+dsc-w830 In PDF document text
    • https://cdn.sqhk.co/zenujulikik/ALjhPyJ/pamupinunejomo.pdfIn PDF document text
    • https://jelulepotaf.weebly.com/uploads/1/3/4/3/134383906/lobitavipelipov_jivizoban_gazakisu.pdfIn PDF document text
    • https://xezinazilasiza.weebly.com/uploads/1/3/4/3/134319357/fisowivuzuza.pdfIn PDF document text
    • https://cdn.sqhk.co/nimawabej/jbMhfhd/295362602.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366305/normal_5fcecb9dcd497.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454672/normal_5fafd856c9028.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379626/normal_5ff061252eb8d.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/4c0eea35-dee0-4d2c-995b-d74b8ca17cff/pisotomobagagi.pdfIn PDF document text
    • https://s3.amazonaws.com/wibedubosateg/36365991945.pdfIn PDF document text
    • https://s3.amazonaws.com/gupawupigawono/xizegu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/295676c4-312d-4915-b86e-5ac743d72f1c/zig_ziglar_performance_planner_d.pdfIn PDF document text
    • https://s3.amazonaws.com/xamapebonijos/vnh2sp30_arduino_datasheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad1e592b-269e-4f2a-8e14-05a82a17ec0a/jalevazeparexudaduxefanuz.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_off0000b447.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB447 6140 bytes
SHA-256: f78ff9b28bd6402969f8ff7d45b246e18d62c58d733965533a12b3eda269723e
font_01_sfnt_off0000c936.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC936 10796 bytes
SHA-256: e140d21ba1391ed17014685fdccd5c7091b739075a934202c1bd21d87eb0a1c7

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