Malicious PDF — malware analysis report

Static analysis result for SHA-256 0584551d796866ed…

MALICIOUS

PDF

81.7 KB Created: 2021-02-23 02:18:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 0cd445d63f3a21b6f9d07cde2516b01b SHA-1: bbf563db604e9ea1f309a6978b36f9bd91de6944 SHA-256: 0584551d796866ed5ebf118010468399ce0ca9e5414c5e8242e91f54c7d5bc1c
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, with one specifically referencing 'how to set up swann camera system' and pointing to a suspicious domain. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a link farm on disposable hosting, suggesting a phishing or redirection scheme. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://maypoin.ru/wb?keyword=how%20to%20set%20up%20swann%20camera%20system PDF link annotation
    • http://damvglaz1.xyz/zijazoxube5rhs3.pdfIn PDF document text
    • http://trokot-shopnew.online/porsche_cayenne_gts_for_sale_manual_transmissionvswor.pdfIn PDF document text
    • http://detonicro.website/fury_warrior_pvp_talentsegxch.pdfIn PDF document text
    • https://cdn.sqhk.co/guzoladip/iduwea0/ponizuparasudakuj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447626/normal_6022fa294e780.pdfIn PDF document text
    • https://cdn.sqhk.co/jeforije/fuZUIKz/79243516138.pdfIn PDF document text
    • https://cdn.sqhk.co/xamowizaso/Orijtii/36708857697.pdfIn PDF document text
    • https://cdn.sqhk.co/pasojixaju/jYAhcPB/dubbo_to_broken_hill_road_trip.pdfIn PDF document text
    • https://cdn.sqhk.co/tivinarafuvu/4sOjagg/53501372548.pdfIn PDF document text
    • https://cdn.sqhk.co/vufuvevu/jcgeWmN/76047619507.pdfIn PDF document text
    • https://cdn.sqhk.co/kupawusel/SN7giCc/16184711835.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486363/normal_5fe20d23ef3b9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://godolefimew.epizy.com/toxuwalapetuwilu.pdfIn PDF document text
    • https://s3.amazonaws.com/mejados/auto_sketchbook_app.pdfIn PDF document text
    • https://s3.amazonaws.com/wazorixekunafob/94854837454.pdfIn PDF document text
    • http://xoroniwogogo.rf.gd/nanututivuno.pdfIn PDF document text
    • https://s3.amazonaws.com/betefowubevat/care_home_training_matrix_template.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e324.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE324 5204 bytes
SHA-256: 97d5977a4043772b306dce09b966d367f0d4cd01fa2c9e4164b7d2be69fb1480
font_01_sfnt_off0000f4cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4CD 2024 bytes
SHA-256: 7c66f23c67480fa818ab30bdb334c5e8ca0e257859ae149a19159aad44b22614
font_02_sfnt_off0000fe69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE69 11480 bytes
SHA-256: 96cc040fd1964199bd2dfa6a50cc98dca6563718a5e86753a774b18507ff2446
font_03_sfnt_off00012486.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12486 16060 bytes
SHA-256: 5b45d8957cdd618c0f157c507058aef1810e6158bb3d1abf257796d6008f54d1

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