Malicious PDF — malware analysis report

Static analysis result for SHA-256 8308e816f1e0f770…

MALICIOUS

PDF

69.8 KB Created: 2021-03-30 00:52:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: a6e686c8f7e59f0b48b8cce47e289072 SHA-1: 967329cd951f2e40af47450d14d09b22a2fb3a8a SHA-256: 8308e816f1e0f7704c5f33ee74a58705a3bafa83454536bf8e4afd02dd643fcf
146 Risk Score

Malware Insights

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

The sample is identified as malicious by ML classifiers and ClamAV, with heuristics indicating it's a callback phishing lure. The document body, though heavily obfuscated, contains text suggesting a 'live and let live' theme, potentially a deceptive element. The embedded URL 'https://mezovuduw.ru/wix?keyword=live+and+let+live' is a primary indicator of malicious intent, likely serving as a landing page or part of the phishing infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://mezovuduw.ru/wix?keyword=live+and+let+live PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4478430/normal_6060c6f8a8fb0.pdfIn PDF document text
    • http://novobemebubavex.iblogger.org/danabenoxoba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422637/normal_6009d18c47b27.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373520/normal_5ff823f55a702.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501046/normal_603d544f817be.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407781/normal_5fc72bed5c140.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://eb62986f-0112-409a-9ebe-777412bc5c19.filesusr.com/ugd/26938b_c5eff275f61e49aba0f8bb1d06435322.pdf?index=trueIn PDF document text
    • http://naxudafaxe.epizy.com/laboratory_corp_of_america_holdings_annual_report.pdfIn PDF document text
    • https://s3.amazonaws.com/godoremitiwuja/18075968083.pdfIn PDF document text
    • https://425e2ee7-996f-4c6d-a593-b44a2a39b733.filesusr.com/ugd/bb05c1_6859f8e86fba407aa2964d6ed52cbd06.pdf?index=trueIn PDF document text
    • http://todizegi.epizy.com/ciclo_renina_angiotensina_aldosterona.pdfIn PDF document text
    • http://jujonejetas.epizy.com/zefiwak.pdfIn PDF document text
    • https://s3.amazonaws.com/xazarujokemus/nutritional_information_brussel_sprouts_steamed.pdfIn PDF document text
    • http://vijanemafe.rf.gd/53291573243.pdfIn PDF document text
    • https://34886cf3-15ed-44db-93e8-8979dc7c4cd7.filesusr.com/ugd/ea2c45_f0846f0baa724b148a5e2f563fc237d7.pdf?index=trueIn PDF document text
    • http://mevomum.epizy.com/service_improvement_action_plan_template.pdfIn PDF document text
    • http://romuwoturifitam.epizy.com/fotuku.pdfIn PDF document text
    • http://gewopebij.epizy.com/the_forgotten_way_study_guide.pdfIn PDF document text
    • http://bubobebetoju.rf.gd/spc_u_chart_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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d2ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2EA 4548 bytes
SHA-256: d9b4124eba8567e14b77432b74cfeffeaa0532784b3a2d3f07dcc462ee35b659
font_01_sfnt_off0000e27c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE27C 11168 bytes
SHA-256: 89f7d64eb93f5874e50ea996550fd8421f636cf119f835bf088150cb860a192a

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