Malicious PDF — malware analysis report

Static analysis result for SHA-256 481d4bb852be849b…

MALICIOUS

PDF

46.4 KB Created: 2020-11-01 20:43:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 418babb970f7c3ab693bdb129c72e1fe SHA-1: 7cfc567db7b964b9f8623a06e796a8827c38626f SHA-256: 481d4bb852be849b8940aea2a8d44580428dea653b96cf70cf45cf13f5c9c598
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to known malicious redirector infrastructure, indicating an attempt to lead the user to a harmful site. The ML classifier also flagged this PDF with high confidence. The embedded URLs suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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/aws?keyword=that+would+be+great+meme In PDF document text
    • https://bewimowijukoja.weebly.com/uploads/1/3/4/5/134584545/vemuxos_bopogotoxiza_jixotimerub.pdfIn PDF document text
    • https://zisokilusativ.weebly.com/uploads/1/3/2/3/132303079/59852.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383160/normal_5f990e59abf9b.pdfIn PDF document text
    • https://pepisukuwen.weebly.com/uploads/1/3/1/6/131606293/salunamesivokiwidawi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367303/normal_5f87c49fb3964.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384048/normal_5f9ab27d958aa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366304/normal_5f8e1c1465075.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404959/normal_5f98d83e937b4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368245/normal_5f8ca2652fe8d.pdfIn PDF document text
    • https://riragojefo.weebly.com/uploads/1/3/1/8/131857115/kitusox.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369917/normal_5f9532a1d4b01.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/subud/68064148170.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/4063/5542/files/keyestudio_uno_r3_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/9004/9697/files/fodividoxuxutekalix.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_off00006a66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A66 3028 bytes
SHA-256: a8bb295adce06666852798224f8c17cf63d4c16f7697ae4b42c723da0a07d689
font_01_sfnt_off00007542.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7542 5240 bytes
SHA-256: 796c2d3af24eaceba4794b36897a13eb2588fdd97e7b12a3e00b228a01f37b89
font_02_sfnt_off000086fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86FC 11148 bytes
SHA-256: a1058beee4ef532e9daebcf8dce6a42bde486f1cf962e8d9a75c424022e5afa8