Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0c26ce33c145d8c…

MALICIOUS

PDF

98.1 KB Created: 2021-03-19 22:22:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7163ca7df10010780efa752d55cd8913 SHA-1: 1bf325a60bc43fdf4d1b16066cfc4ba68088edf3 SHA-256: d0c26ce33c145d8c0c58f3296dcb6829d130ac176c17107f328d5cdbb8f960d7
156 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, with one specifically identified as a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or a redirect to a malicious site. The presence of embedded URLs and the PDF structure suggest an attempt to exploit users through deceptive content, potentially leading to further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • 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://druttle.ru/wix?keyword=evil+cooking+mama+unblocked
    • https://joxunirefebemi.weebly.com/uploads/1/3/4/3/134319414/3856072.pdf
    • https://xotufidew.weebly.com/uploads/1/3/1/8/131856134/5579251.pdf
    • https://mexarufuwusa.weebly.com/uploads/1/3/4/5/134599415/4676046.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://9e9203d9-9f5b-42f2-a849-05e42d741f90.filesusr.com/ugd/3527d5_7d8512ec9748487bacf3d9b5c30b0cac.pdf?index=true
    • https://54179944-c6a3-49b3-9462-5d1939b6aff2.filesusr.com/ugd/49f5ef_83a7e6f391964f149b4a4304605f1d8c.pdf?index=true
    • https://uploads.strikinglycdn.com/files/03bf82c0-fcaa-4c34-84ec-a25e75a7719d/difference_between_leader_and_manager_in_hindi.pdf
    • https://76a725e8-946c-4ae9-9249-cda469d35108.filesusr.com/ugd/83c8cc_b8fd66d361a9460aaff4f0dea42ffe34.pdf?index=true
    • https://uploads.strikinglycdn.com/files/bbc3e2a9-497a-42dc-8079-c8b1c017a958/81361539158.pdf
    • https://s3.amazonaws.com/wokesabisevo/kafefopenaf.pdf
    • https://36425c1f-c329-48aa-845d-1f8252cb45c8.filesusr.com/ugd/01d500_67a7780cac09403f9df81b0c30a83fbb.pdf?index=true
    • https://s3.amazonaws.com/mizeteb/31614515261.pdf
    • https://f4b9ed98-44c1-44e6-9966-d9817cd43de7.filesusr.com/ugd/9ced5d_2f50e048bb2c4e84905e44f0853ab7ff.pdf?index=true
    • https://2aa89031-56ac-4de1-b828-aabe99840ec8.filesusr.com/ugd/cf14a4_a96ab9643e0a4b06a0657645155729b5.pdf?index=true
    • https://a6132035-7465-4fe4-be4e-2faa96c22dab.filesusr.com/ugd/cf950b_3b9072c2d55a40f59bcd9278b035e976.pdf?index=true
    • https://5d3a3edc-1384-4eb0-a354-174dd54c13aa.filesusr.com/ugd/7f5dc5_1440040e37ee406b912139bcfac5e602.pdf?index=true
    • https://e216d865-ddc7-438b-99b2-64609380b1bb.filesusr.com/ugd/7ae8b3_09c2bdaa425a49e69c27a571904c11de.pdf?index=true
    • https://43a2ba88-5de9-465b-b95f-6a4d82f2d06e.filesusr.com/ugd/dcbeda_7c2cb767301d4cbaa1526f7a26d45491.pdf?index=true
    • https://s3.amazonaws.com/xupimaral/1996_coleman_fleetwood_pop_up_camper_parts.pdf
    • https://ded05c8b-f0d8-42bc-a64b-daa0b63394ca.filesusr.com/ugd/99afdc_f793a26f705049e49a0c70dee3b40d49.pdf?index=true
    • https://s3.amazonaws.com/ganubifirigevi/lizek.pdf
    • https://uploads.strikinglycdn.com/files/90e721bf-0bfc-4193-9eea-2e63a4908274/boderipivelufatanaj.pdf
    • https://uploads.strikinglycdn.com/files/7bc72d01-436a-4918-bf1e-89b8c7b0b75f/nebenijinenaxas.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001419d.bin
2c38b739ede780fcc20a50c515c1c6a0203ebd8eefe01a3646928b3f4891bfd0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1419D 5204 bytes
font_01_sfnt_off0001534d.bin
666e3bba4ee5cf1ee38ae37f28bbab3bcb8debab8f0e494e69968e951b38b857		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1534D 11892 bytes

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