Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6c1f4ff92453485…

MALICIOUS

PDF

59.6 KB Created: 2020-12-19 06:58:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 48b1bb4baa528e07a8de0654ffd0fa6c SHA-1: 4aefb5cdb99a5401f85fea87eabdd1dd4f1065f0 SHA-256: d6c1f4ff92453485d6b7f721be6cee8e8e5af8ae29d609f342fd2338379e3da4
104 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of a download button lure and an embedded URL pointing to a suspicious domain suggests a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URI are indicative of a potential exploit or redirection to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=tarzan+free+movie+disney PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4365607/normal_5f8771d1a34ec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417305/normal_5fba2ca9955e0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366324/normal_5f89c82d65f0f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446390/normal_5fbbc817cafeb.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/fdabc65c-d327-4eb4-aa3a-8ba9d99f4a09/usher_you_remind_me.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0d7ac403f5353fd956fc5/t/5fc170333485235c86fcfcc1/1606512691628/chemistry_if8766_instructional_fair_inc_answer_key.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbfe7e212facd59cea75dab/t/5fc6ae1208845d092477e87f/1606856210634/wings_of_fire_graphic_novel_4_free.pdfIn PDF document text
    • https://s3.amazonaws.com/xakapudakadu/29548875886.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da1802f7-2bad-4f4e-8079-4d879cf39923/namenavusuwi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0dd27ff3-03aa-4619-b316-7a37c22f7811/28676935552.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_off0000acca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xACCA 5180 bytes
SHA-256: 2bd606ad566d53aaa96129b0e800f03c82c1453695084a8d1d8ed9cff6b53df3
font_01_sfnt_off0000be6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE6C 9988 bytes
SHA-256: 643e9a0ae9071fc9b0118a5f598ab713b1b1d5e8ce139cec302cafb9a67aaea7