Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e47008d78305ecd…

MALICIOUS

PDF

83.6 KB Created: 2021-05-25 03:44:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 63e7af6f90360aa237f1486f99bd9d33 SHA-1: 5984997e4c25825f118c20f36159d4c370582731 SHA-256: 7e47008d78305ecd7cb0342e67a506fffe579c1d9d7f89b612f97c417734a3d0
226 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing and social engineering attack. The document contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to malicious sites. The 'SE_BROWSER_INSTALL_LURE' heuristic indicates the document's content likely prompts the user to install a browser extension or update, a common tactic for malware delivery or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 7

  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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://bologen.ru/strik?utm_term=pokemon+fire+yellow+version+gba+download PDF link annotation
    • https://woxevawalonot.weebly.com/uploads/1/3/7/5/137517472/kikuxajiza-watolovif-bigivokob.pdfIn PDF document text
    • https://salexutoxor.weebly.com/uploads/1/3/4/7/134761189/9118804.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460476/normal_60462228e3220.pdfIn PDF document text
    • https://jipalemidezuf.weebly.com/uploads/1/3/2/6/132681368/gubekoxesuxipene.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417413/normal_602d890ea4236.pdfIn PDF document text
    • https://bazojosazim.weebly.com/uploads/1/3/6/0/136086377/2997cfb.pdfIn PDF document text
    • https://voganolov.weebly.com/uploads/1/3/4/3/134372868/tujelijeg_tokaw_rikob.pdfIn PDF document text
    • https://legopaxazomunan.weebly.com/uploads/1/3/5/3/135396831/vivomin_fegujob.pdfIn PDF document text
    • https://forelidik.weebly.com/uploads/1/3/0/7/130775511/woxufepazirarot.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458163/normal_60434972b1c93.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458849/normal_60680682b31a1.pdfIn PDF document text
    • https://fukubumo.weebly.com/uploads/1/3/4/0/134016705/d1af086341e3.pdfIn PDF document text
    • https://podogavefa.weebly.com/uploads/1/3/1/4/131438056/vuxik_vebuzawuna_rakikepoza.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391621/normal_6030eda5db6c6.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/farefasejikap/nizil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e7b4017-9dcd-4e28-8803-055ed1316fbe/james_baldwin_essays_on_love.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a5cec62-7d01-41a7-91ab-511b0d4ad675/is_dale_earnhardt_memorabilia_worth_anything.pdfIn PDF document text
    • https://s3.amazonaws.com/fowikorejodi/cursive_writing_a_to_z_worksheets.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/32648326-612e-4be6-9a46-1e614c405063/redox_and_electrochemistry_worksheet_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4d40bb9-b5fd-4a74-b063-d2689b23658c/gexowoluzijivugi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/36d20381-d6f9-47e2-83e9-9255ed6664f9/what_are_the_ranks_in_the_raaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/51ff29bb-9007-40e5-88aa-a92080e1c818/federalist_70_summary.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b9e0e4f-bf46-4aae-8c89-e85a49c2ac4b/levunowurivolor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/acc86bb9-c4a5-4377-9cf6-960d93878f99/introduction_to_the_theory_of_computation_second_edition_solutions.pdfIn PDF document text
    • https://s3.amazonaws.com/bupesejirijejus/delorigujis.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_off00010389.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10389 5684 bytes
SHA-256: 39b380a9897d0aaf29b9d991e8270b2073a5a4d4ec972cfa3a4ad3dd7b2c33c7
font_01_sfnt_off000116f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116F0 12556 bytes
SHA-256: 433679e9ffbed3e6ad750882fd17e57d89c84d297982268e9ceb4d5987fdf0e5

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