Malicious PDF — malware analysis report

Static analysis result for SHA-256 530ccd3dc0b15d79…

MALICIOUS

PDF

77.7 KB Created: 2021-01-06 02:07:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: f8779206805eee4406e41e4d102d6b89 SHA-1: 29a19d9cadef6bfc7e2c1486cdb6571f6eab1b00 SHA-256: 530ccd3dc0b15d7930413eb1152762165c623a590e4a29a0776b41142a12b08c
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 heuristic 'PDF_SEO_LINK_FARM' suggests the document contains a large number of external links, likely to manipulate search engine results or redirect users to phishing sites. The presence of embedded URLs further supports this attack pattern.

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://traffset.ru/aws?utm_term=new+english+horror+movies+2019 PDF link annotation
    • https://cdn.sqhk.co/kezavilageg/Nghb6id/checklist_approach_theory.pdfIn PDF document text
    • https://tavurusifuta.weebly.com/uploads/1/3/0/7/130740255/d4c28c04840e8e.pdfIn PDF document text
    • https://cdn.sqhk.co/novupezezis/IlLgihe/space_frontier_2_apk_hile.pdfIn PDF document text
    • https://totixibepetuter.weebly.com/uploads/1/3/4/3/134345693/segako.pdfIn PDF document text
    • https://cdn.sqhk.co/lewulula/jcsbwnF/move_to_ios_app_android_version.pdfIn PDF document text
    • https://cdn.sqhk.co/bitizulokiva/gcgeFgj/kuwazivojibusod.pdfIn PDF document text
    • https://cdn.sqhk.co/gituridewo/nwDidON/sitting_room_furniture_arrangements.pdfIn PDF document text
    • https://ridolagu.weebly.com/uploads/1/3/0/7/130775195/1192579.pdfIn PDF document text
    • https://fipamexi.weebly.com/uploads/1/3/1/4/131407823/togiguf.pdfIn PDF document text
    • https://cdn.sqhk.co/pirujezexod/viecXha/48132906110.pdfIn PDF document text
    • https://dezuvamugofa.weebly.com/uploads/1/3/4/1/134131805/5585371.pdfIn PDF document text
    • https://cdn.sqhk.co/gituridewo/7nigq03/drive_in_theater_nj_vineland.pdfIn PDF document text
    • https://cdn.sqhk.co/werutojij/VUJ4WpT/free_music_landing_page_wordpress.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/9fa04493-1f7b-4e0e-8c16-c9b4ef211b81/osrs_kbd_solo_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd9976b8-e9d6-4f21-92c3-5aa1663ec790/wumonefu.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 8

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_off0000f0e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0E4 5492 bytes
SHA-256: 380cb05ee3f8a3232a4d3dcf79bd04185724fcd4457fe706dc57a430c35871bd
font_01_sfnt_off00010390.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10390 10880 bytes
SHA-256: dae81bb55cfa15d76fb8c02a57ee4a9db82c9e5d52050fbdf0d5572d331cde25

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