Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f228533419ae359…

MALICIOUS

PDF

72.3 KB Created: 2021-02-24 14:49:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 591dfe7ade015fb870e7becbaa5db48e SHA-1: bf98d86a2268de359e9228265898691d8f210bf6 SHA-256: 3f228533419ae359edd2e0812dc4a604ed5560421af9cd385f734e13305329f7
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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) or Microsoft license-boilerplate 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://bologen.ru/wix?keyword=nebraska+coed+softball+tournaments PDF link annotation
    • http://setlyb.online/luratizoluwuf3enbq.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460465/normal_5febf9a2da38d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444877/normal_600134ecc3c59.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462344/normal_6035c6f0a1d50.pdfIn PDF document text
    • http://kernig.online/pekatonivaduniwagippk74.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368229/normal_60359d508fe50.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465136/normal_5fc5804d59cd7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461234/normal_600da6721aa22.pdfIn PDF document text
    • http://espaceclient-cmb.com/functionalist_theory_of_language_acquisitionubccs.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449774/normal_6023dcdf45c65.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379851/normal_5fd296bbaedaa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://boxokur.epizy.com/89447929759.pdfIn PDF document text
    • https://s3.amazonaws.com/kesumasaka/punegowesi.pdfIn PDF document text
    • https://s3.amazonaws.com/jeromisixinolib/93307626907.pdfIn PDF document text
    • http://buwanizun.epizy.com/game_god_of_war_pc_full.pdfIn PDF document text
    • http://baxamudixilado.rf.gd/will_try_my_best_in_french.pdfIn PDF document text
    • https://s3.amazonaws.com/ditiruz/59394707652.pdfIn PDF document text
    • http://xulufavuso.rf.gd/implication_in_research_report.pdfIn PDF document text
    • http://masoxagami.epizy.com/kagiruko.pdfIn PDF document text
    • https://s3.amazonaws.com/sonutopexaramuf/detixulonujupozet.pdfIn PDF document text
    • http://somekifizepu.epizy.com/kinuverevumem.pdfIn PDF document text
    • https://s3.amazonaws.com/sonutopexaramuf/balancing_equations_chemical_reactions_worksheet.pdfIn PDF document text
    • http://bijamujijupife.epizy.com/automobile_mechanics_nk_giri.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_off0000dcf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCF7 5340 bytes
SHA-256: b63a77c7f4b98b4ccbbc2d62b62da9af5e7758ea6ab9fe522fbbc4cad2d081dc
font_01_sfnt_off0000ef12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF12 10716 bytes
SHA-256: 286b2c594810216ac297ac1fcc5ea1689b5114e445670d4f2d657abd9f9f438e