Malicious PDF — malware analysis report

Static analysis result for SHA-256 968b42fe1e4903b3…

MALICIOUS

PDF

69.0 KB Created: 2021-03-13 16:12:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 60a854b3ca83dc80b81bf4af0440d6e6 SHA-1: d453ca78c978105ef5f2a1d11805b3c6b10597a8 SHA-256: 968b42fe1e4903b384556875a11108f6b6e3647f3c7205369a64f8acd63958e8
96 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic, suggesting a malicious intent to redirect users. The primary URL, 'https://lozipotod.ru/wix?keyword=darden+direct+distribution+haines+city+fl', appears to be part of this scheme. While no scripts were directly extracted, the PDF structure and numerous external links strongly indicate a phishing or malicious redirection attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 4

  • 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://lozipotod.ru/wix?keyword=darden+direct+distribution+haines+city+fl
    • https://static.s123-cdn-static.com/uploads/4451018/normal_5ff49ba8b0eb8.pdf
    • https://static.s123-cdn-static.com/uploads/4386091/normal_5ff5312f1bef3.pdf
    • https://cdn-cms.f-static.net/uploads/4481162/normal_6025b4070ad4f.pdf
    • http://vanlit.ru/jotaledavugaxumufawapivamzv9y8.pdf
    • http://devgm.design/easy_way_to_learn_organic_chemistry2f210.pdf
    • https://cdn-cms.f-static.net/uploads/4475582/normal_6040e43223882.pdf
    • http://reduslimitaly-official.site/how_to_replace_wick_on_a_kerosene_heaterefx52.pdf
    • https://static.s123-cdn-static.com/uploads/4373999/normal_5ff9a3e320976.pdf
    • https://static.s123-cdn-static.com/uploads/4413702/normal_6003946b0757b.pdf
    • http://generalmassage.online/lusosawijalamawuxufejugej0w1bx.pdf
    • https://static.s123-cdn-static.com/uploads/4387577/normal_5ff691ba1e805.pdf
    • https://cdn-cms.f-static.net/uploads/4458839/normal_603b44d69825f.pdf
    • http://meetchat.space/je_lis_je_comprends_cm13yg3w.pdf
    • https://static.s123-cdn-static.com/uploads/4447436/normal_5fdfefa23af0a.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/nazekisigiduz/coleman_powermate_5500_generator_owners_manual.pdf
    • https://7f993087-45f6-41f4-96e5-9dcaca18fb91.filesusr.com/ugd/9a92dd_ac3a22115abd41df9ac9c07172ed985e.pdf?index=true
    • https://s3.amazonaws.com/silubebebefuju/46010107724.pdf
    • https://s3.amazonaws.com/tabobujimo/guided_meditation_for_inner_peace_and_happiness.pdf
    • https://s3.amazonaws.com/radubozufiwo/chevy_silverado_2015_manual.pdf
    • https://s3.amazonaws.com/wipotegadodorek/how_to_thread_a_euro_pro_sewing_machine_youtube.pdf
    • https://a9864912-ad24-422b-99f3-2d90f7703507.filesusr.com/ugd/d6af85_63c4500e19924ab3ada27587d81cb609.pdf?index=true
    • https://s3.amazonaws.com/tesapibebujep/correct_bibliography_format_for_websites.pdf
    • https://s3.amazonaws.com/rujimidujek/kogoxenezizosixezanap.pdf
    • https://s3.amazonaws.com/dazovosugev/cantor_dust_binary_visualization.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_off0000cdc2.bin
30baf0f0f3b84173ba8ab29414a35cbf1cbbd7ef27654a3817469ef0e78d5f1e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCDC2 5352 bytes
font_01_sfnt_off0000dffa.bin
d1aaff2e39b902bdc2d3ba31bd29ac110af3ff67cfe0e0acdf1e6a81c3426e44		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDFFA 10728 bytes

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