Malicious PDF — malware analysis report

Static analysis result for SHA-256 367287595b7f24f2…

MALICIOUS

PDF

64.1 KB Created: 2020-12-24 06:36:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 142b675875115e5e9bde05adafe2657e SHA-1: 369a5d943dc4b49b45653b64a01cd7939cadee17 SHA-256: 367287595b7f24f2bcaf65642ce68a5b979f8e25afbd581bfe94099f6d91ae95
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains a large number of external links, many pointing to potentially malicious domains, suggesting a link farm or phishing campaign. The presence of embedded URLs and the PDF structure itself are indicative of an attempt to redirect users to malicious sites for further exploitation.

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
  • 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.
  • 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://trafffi.ru/aws?utm_term=can%2527+t+feel+my+face++free PDF link annotation
    • https://cdn.sqhk.co/nodomepe/6NRhjig/mosudivepumoviven.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404987/normal_5f9d0279f0022.pdfIn PDF document text
    • https://cdn.sqhk.co/lisesemafo/hdAGjdq/mudutetevavodikefil.pdfIn PDF document text
    • https://bezoduremudopez.weebly.com/uploads/1/3/1/4/131437412/8892873.pdfIn PDF document text
    • https://cdn.sqhk.co/kibizatududo/dBgi9d5/notepad-_note_app_reminder-_colornotel.pdfIn PDF document text
    • https://duxebiforup.weebly.com/uploads/1/3/4/0/134013009/216096.pdfIn PDF document text
    • https://sijoxedewi.weebly.com/uploads/1/3/4/3/134346210/kagoxafamokakud.pdfIn PDF document text
    • https://cdn.sqhk.co/jesisuvov/ableihk/febunukoxisololafutufefa.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/d65a627f-4dfc-454b-bb38-5516f07b0c3e/xavajotalon.pdfIn PDF document text
    • https://s3.amazonaws.com/tedowafomaru/cordilleran_ice_sheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/69c29e08-bce3-446f-88ad-618395802fc6/rinafaj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd171836-e524-4343-ad7d-88b8a6487e9a/pazoxoged.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a2552a3-84ed-4bd7-8242-28be02675e5d/sumuxesi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b339c26e-6adc-4d23-aeba-454242c99c59/79747052983.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_off0000bfe5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFE5 4888 bytes
SHA-256: fa8a778c9678d49eab957b063da46d9e2c1d719f666c727dc01d07fb33e27e0c
font_01_sfnt_off0000d082.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD082 10352 bytes
SHA-256: 4d329fadd0aff83de304ccf05ba1248e1e5d6a53c45a3441a420695c5b54298a

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