Malicious PDF — malware analysis report

Static analysis result for SHA-256 01ce62541db394e4…

MALICIOUS

PDF

66.7 KB Created: 2020-11-14 15:00:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: b6c10719e7f9e1c0e2fcb7c82e0c7ad9 SHA-1: 1e2bcd85a02bd6dce964c87f3facc7220d184295 SHA-256: 01ce62541db394e4bf28e107db74a1aca242ed65e9836f8acbfbba4786dac63e
214 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains embedded links that redirect to malicious infrastructure, as indicated by the 'PDF_MALICIOUS_REDIRECTOR_LINK' and 'PDF_SEO_LINK_FARM' heuristics. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. The document body, though heavily obfuscated, contains keywords related to the malicious URLs, reinforcing the phishing pretext.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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=honda+service+code+b12 In PDF document text
    • https://xaranetudu.weebly.com/uploads/1/3/4/0/134016810/e9181659d55b334.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420748/normal_5faec7493673e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365661/normal_5f877afee026d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446017/normal_5fa3c7469ef13.pdfIn PDF document text
    • https://jokilexagazoxo.weebly.com/uploads/1/3/4/6/134602179/fofexavaket_puxivanevogo_daxetupufov_wupet.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366980/normal_5fac0bd4e148f.pdfIn PDF document text
    • https://wuwawibef.weebly.com/uploads/1/3/4/6/134608234/9b3a8b32f018.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381104/normal_5f8ea2a9e035e.pdfIn PDF document text
    • https://zozufawagizawag.weebly.com/uploads/1/3/4/4/134454621/2737819.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373753/normal_5f908e782c881.pdfIn PDF document text
    • https://faxufoxexukixel.weebly.com/uploads/1/3/4/4/134455740/0f23d.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/7640b9db-6592-4fe5-bf3c-92079faeb99c/le_monde_d_en_haut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/303395c6-ad1f-46d4-b373-1496a7b51360/fugonozofexalubadetepijof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d11dfca5-deda-491f-90de-52b935453459/50920953615.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/646a346b-9603-4961-961b-79d170871c11/giwotolejoj.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_off0000c4db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4DB 5244 bytes
SHA-256: ff6b061059bf9b1c3ee807b78becc44fe438cdd56d15de2ea21c8c7b654c1dc9
font_01_sfnt_off0000d6c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6C3 11596 bytes
SHA-256: 1029f0b75b3ef5f742a3f60dd8b1eff47e05100ace3f0e16a8863b96e7cc16d3

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