Malicious PDF — malware analysis report

Static analysis result for SHA-256 02824ad35efdb2f4…

MALICIOUS

PDF

66.2 KB Created: 2020-11-23 12:51:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: b997d4bd418c2544a93f156fdaee8d45 SHA-1: 1a94af1e23d68f9c1212bce8cc88d805373d94b4 SHA-256: 02824ad35efdb2f40749ced850ef6265e757de62bb65f8a087de9a4f4ee27bb9
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. An external URI pointing to 'traffking.ru' was extracted, suggesting the document's purpose is to redirect users to a potentially malicious site. While no scripts were explicitly extracted, the PDF structure and the presence of embedded URLs are common in phishing and malware delivery schemes.

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/aws?utm_term=wiley+verbal+ability+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4453337/normal_5fa2ce99e2ff9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419642/normal_5fa8dfd093d1a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501993/normal_5fb9bad034f99.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384469/normal_5fa0a2cc8ad60.pdfIn PDF document text
    • https://wawodupalise.weebly.com/uploads/1/3/4/6/134621762/javalulapu_xavawotaxe_golelet.pdfIn PDF document text
    • https://rozujefugupag.weebly.com/uploads/1/3/4/0/134017035/tadadazimemuzilozat.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402297/normal_5fb5fd383b0ec.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/toguvaju/banudenobimuvibi.pdfIn PDF document text
    • https://s3.amazonaws.com/pevarijidasalop/gufodud.pdfIn PDF document text
    • https://s3.amazonaws.com/xalasawu/fenesakadejenefipule.pdfIn PDF document text
    • https://s3.amazonaws.com/lezopobigeza/38826911563.pdfIn PDF document text
    • https://s3.amazonaws.com/rujabepifar/free_cv_template_adobe_indesign.pdfIn PDF document text
    • https://s3.amazonaws.com/farezelof/84092905718.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_off0000c735.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC735 5172 bytes
SHA-256: 47234641788aed7cc4c5ac09913c27be80c8d07d06b8b12fb8f83ae5aca58471
font_01_sfnt_off0000d8f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8F1 10652 bytes
SHA-256: 77c309be1eedec9a719b166c483b05ee191f4ef3c8899e5a6ad3832bcc232b76