Malicious PDF — malware analysis report

Static analysis result for SHA-256 42fcce5b1444d38a…

MALICIOUS

PDF

66.5 KB Created: 2020-12-13 23:53:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 79aa642f40625c56274f5877fa1e72f3 SHA-1: 42449560493b16e73abb728f89671b84fc10010d SHA-256: 42fcce5b1444d38ab1dd057949a1f026a70631c0a59570f39d5010af28a994fb
154 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector URL, which is a strong indicator of phishing or malware distribution. The ML classifier and ClamAV detection further support its malicious nature. Although no scripts were explicitly extracted, the presence of a malicious URL and the overall context suggest an attempt to redirect the user to a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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=your+wish+is+your+command+audio In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367951/normal_5fd646b67c4df.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4499300/normal_5fc423e17504c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414501/normal_5fafd42e63f2a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386074/normal_5fd2a50512e53.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443801/normal_5fb76775985cc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387424/normal_5f9c1e782b33d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454967/normal_5fbeb4b9e1ac9.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/wesezuzuvalirik/limuwefamepeb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/598a189e-fbeb-455d-a958-355d66b9585d/exercice_gomtrie_dans_l_espace.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd6bc1a7-ecb4-4628-857a-0caae1c44b42/speed_maths_tricks_download.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/xaget.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c21ad7bf-30f3-428f-91cd-3920e4e71325/pobivagizidejumuxig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/724b60f2-67bf-4f76-b9b8-bbf183d3b741/naporotafo.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_off0000c6af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6AF 5300 bytes
SHA-256: 216f39ea9ea60af21fc0e057f1e08546800081fcca2f121f0c3965e593f8c6b6
font_01_sfnt_off0000d8a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8A7 10856 bytes
SHA-256: 6447b0a8e44224184101637bf244d29049907ce73628426d1e7bb98d94a0c660

Open this report in the interactive analyzer, or submit your own file for analysis.