Malicious PDF — malware analysis report

Static analysis result for SHA-256 07c3ccf5399891b0…

MALICIOUS

PDF

77.3 KB Created: 2020-12-29 10:41:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 2c72568ed91124aa94c28a56f33ef224 SHA-1: 280483cdb561e1ead6771c6e5632b75fa0d9e8a3 SHA-256: 07c3ccf5399891b029268391e72f62984a11166709b2a419476aa207b9677718
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains multiple external links, with a critical heuristic identifying a link farm structure. One prominent URL, 'https://traffnew.ru/strik?utm_term=picker+3d+online+free', suggests a lure related to a '3D picker' tool. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and external links are indicative of a malicious document designed to redirect users to harmful content.

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://traffnew.ru/strik?utm_term=picker+3d+online+free PDF link annotation
    • https://gorofegi.weebly.com/uploads/1/3/4/4/134462705/jadute_wuledexunezaz_togexid.pdfIn PDF document text
    • https://cdn.sqhk.co/vakanaju/UAgHk95/lalonuvatogizudoserebubi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366952/normal_5fc5caab25d94.pdfIn PDF document text
    • https://cdn.sqhk.co/dadakafopina/jjgdghv/neweveruxavakujemusinib.pdfIn PDF document text
    • https://cdn.sqhk.co/ludukuni/hh8KjdB/hot_dog_bubble_gum.pdfIn PDF document text
    • https://cdn.sqhk.co/bixatavafut/Qrrhjgd/45189795925.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/suxugipipolazog/ontario_landform_regions_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/kozewuposoridil/statistical_software_for_data_analysis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20e67654-cfa6-4c9f-aff9-e7b8397441a8/78331544639.pdfIn PDF document text
    • https://s3.amazonaws.com/jupevuxirapi/journal_citation_reports_2018_gastroenterology_hepatology.pdfIn PDF document text
    • https://s3.amazonaws.com/fedojigudaj/ejercicios_biblicos_adventistas_2019.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

Related samples 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f212.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF212 4856 bytes
SHA-256: 4b44c2673ff66dac9a1ec876bf100f2a6099410bd17b6d86d988538cbd9a67bb
font_01_sfnt_off000102b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102B4 10608 bytes
SHA-256: 6f9025f3345d18713bd9c7900a05f8fec43a2cb6d2e13438c8e75e2c0d23cd8b

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