Malicious PDF — malware analysis report

Static analysis result for SHA-256 475e585e907c8c01…

MALICIOUS

PDF

60.3 KB Created: 2020-12-15 01:14:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 6cc36bc33fb60f2e235d20998b3e7c47 SHA-1: c146a0e750a7709559a18cf333c8a86272cc02c5 SHA-256: 475e585e907c8c01987b22774711bb403caec6f0b2266e185cecd77eb82635c1
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, traffmen.ru, which is disguised as a college library login page. This indicates a phishing attempt to steal user credentials. The ML classifier and ClamAV detection strongly support the malicious nature of this PDF, likely serving as a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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://traffmen.ru/123?utm_term=college+of+dupage+library+login In PDF document text
    • https://jobalexaxikut.weebly.com/uploads/1/3/4/8/134892204/jibonodo-torewara-wipotut-sebudikodugotod.pdfIn PDF document text
    • https://wosezobar.weebly.com/uploads/1/3/1/8/131856012/lopajopusi_kejojovip_kokuvu_futorotijim.pdfIn PDF document text
    • https://xusawoji.weebly.com/uploads/1/3/0/7/130739635/vikisirit-ridamu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc7a311fc603311fbfb812c/t/5fca225bfedaa13a486a899e/1607082597376/zisagixinuxetujavupu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fcef0b1cb3b830a1a304b7e/t/5fd04585a91a8d2433758f9e/1607484805601/60604548073.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d013dff-cea9-4461-aac1-0b7c8075a022/xumozigosupi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b83bba6-2bbc-45a2-99eb-019366baa171/genixidozenuwo.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fcde9cb169f3e188a7a1c96/t/5fd1a17e880fa23343d06271/1607573889222/wifi_network_analyzer_app_for_iphone.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3dd4f3e1-0710-4000-9b6f-ada6f848a66d/52368063940.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_off0000b147.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB147 5180 bytes
SHA-256: b7913617c7fb778fd8e2e1ab07ec7ec58fee56ed8b0990eb0623d7db7fc451f5
font_01_sfnt_off0000c2f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2F4 9768 bytes
SHA-256: fa63195ba8eab691609060586c49cbdda2b6a80a63adeed89042347b18cc8386