Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ca8a6be1e2303cf…

MALICIOUS

PDF

70.5 KB Created: 2020-11-18 09:34:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 9a2260a13b9312b6a6eca73e02173a7c SHA-1: e0c36f5710987cd8228ca89fd49228452f2b2e4e SHA-256: 0ca8a6be1e2303cf714cbf38c6061047121fcd2a58a57e9d7e0f6995d1e54074
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL points to a suspicious domain, likely serving as a lure for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and heuristics suggest it's designed to exploit users by directing them to a malicious site.

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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffe.ru/strik?utm_term=gest%25C3%25A3o+da+qualidade+marshall+junior+pdf PDF link annotation
    • https://jabuzowe.weebly.com/uploads/1/3/4/3/134312688/robefuju.pdfIn PDF document text
    • https://koxoganonigowup.weebly.com/uploads/1/3/1/4/131408343/rerimopotesim_fasafobekimula_megesiwasego_zawenadafe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381547/normal_5fa6fec6b2749.pdfIn PDF document text
    • https://worobewunit.weebly.com/uploads/1/3/1/4/131406731/b681cf3e87.pdfIn PDF document text
    • https://rivatuvimib.weebly.com/uploads/1/3/4/4/134469475/wuvuporifato.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384307/normal_5fa6fc8d23697.pdfIn PDF document text
    • https://bamegipizof.weebly.com/uploads/1/3/4/6/134647446/7557e4339.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/ca43e14e-1985-4cd6-8dd8-5d22cd33d541/dosesidatiji.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81022659-ff04-4841-8fda-b440d72bd63b/76819885162.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/071de63b-1bf6-41e7-9d11-b7f8683f1e0f/27611960222.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dec4cbd0-3c38-4bf3-b315-b068a803a725/19163112600.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81353ea7-6386-4d3f-a6f5-b161433d0e5f/69180549587.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/928c8300-2fb7-4d08-9156-ae333345c476/cornell_median_grade_report_fall_2017.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_off0000d169.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD169 5832 bytes
SHA-256: 6dd93f7f2354197bfb73c04b282f6f0a0ff8e7c5f28ada7aa801deb65080f0ab
font_01_sfnt_off0000e483.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE483 11936 bytes
SHA-256: 243fc8f9b525cb2b0a1432359f8c4f3728c4f9315272808e7d8899b05c22d950

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