Malicious PDF — malware analysis report

Static analysis result for SHA-256 5daf81f0786df9ac…

MALICIOUS

PDF

69.7 KB Created: 2020-11-25 02:03:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 08a6b01555c0843cd8bdb51dd3a5f7fe SHA-1: ab35acee60657589fffcc4084f9f99c8e3ff860a SHA-256: 5daf81f0786df9ac389bf10f581d454bc4b083be71dbdd26948b8d977d4952d6
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a phishing site. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or credential harvesting. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to trick the user into navigating to a malicious domain.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffking.ru/strik?utm_term=banjercito+tijuana+plaza+patria PDF link annotation
    • https://miposuxabok.weebly.com/uploads/1/3/4/7/134765548/mejuzosijirolaperoki.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425010/normal_5f9929fc71d88.pdfIn PDF document text
    • https://lifagixuwemup.weebly.com/uploads/1/3/0/9/130969738/givadonazuzurebezone.pdfIn PDF document text
    • https://lisefemibumosu.weebly.com/uploads/1/3/4/3/134339955/f1807789cae58.pdfIn PDF document text
    • https://nanorobudilason.weebly.com/uploads/1/3/0/7/130775181/jilejobelado.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/jiwisigetizoxif/go_kart_chain.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc50bcb2-3fdd-447f-bbb7-1f2b90857c30/vafupi.pdfIn PDF document text
    • https://s3.amazonaws.com/tomamujuf/51116120251.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/10892357283.pdfIn PDF document text
    • https://s3.amazonaws.com/pukasojalu/fandango_convenience_fee_promo_code_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/281ec370-fe82-4272-8b66-90709921744a/59469368062.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_off0000c87b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC87B 4924 bytes
SHA-256: 1dc2a3966590923f81e743772394f43c4e6e551a21ff8c735b9fe6aa1d42612d
font_01_sfnt_off0000d953.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD953 15756 bytes
SHA-256: e1390117f4e5dc87e0254c13c94f369efca90a823db35e74b315c0216cd7e50c