Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea246348290dc384…

MALICIOUS

PDF

70.8 KB Created: 2021-03-31 21:43:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 5bb3ff96ad8ec7c8f7b17e7a08ca2060 SHA-1: 5aa8111dc4267505c3744c7523a24a2af0c201c4 SHA-256: ea246348290dc384ce94541752634475773c07a5b98d6c316d499540a1cb855a
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains, suggesting a link farm or phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. Although no scripts were extracted, the PDF structure and embedded links are indicative of an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • 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 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://pelibifir.ru/wix?keyword=run+ninja+run+3+cheats+unblocked PDF link annotation
    • http://noxaduva.mypressonline.com/trimble_access_general_survey_user_guide.pdfIn PDF document text
    • http://gouliwer.online/45746583564k3bpg.pdfIn PDF document text
    • http://xelamoxadavas.mywebcommunity.org/how_to_pronounce_the_name_mowgli.pdfIn PDF document text
    • http://sepoxudozixo.sportsontheweb.net/phenolic_compounds_book.pdfIn PDF document text
    • http://jivavesomuviz.getenjoyment.net/kozufe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385648/normal_603d35cf9deff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422637/normal_601c6f1b44afd.pdfIn PDF document text
    • https://cdn.sqhk.co/pefevepufi/aidBSgf/adventure_escape_hidden_ruins_chapter_5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416789/normal_5fca3a772beaf.pdfIn PDF document text
    • http://edaruzal.xyz/rukufadunorawfxscm.pdfIn PDF document text
    • https://cdn.sqhk.co/jebozibiru/fhchfCb/2090858619.pdfIn PDF document text
    • http://copyright-central-media.com/wibafoxedukce3.pdfIn PDF document text
    • http://cetapp.xyz/value_education_b.ed_notes8fplg.pdfIn PDF document text
    • http://xajavawinereko.mywebcommunity.org/sherlock_holmes_2_hd_tamil_dubbed_movie_download.pdfIn PDF document text
    • http://wobafobigo.mywebcommunity.org/46007507722.pdfIn PDF document text
    • http://dotenipago.medianewsonline.com/budojofosoxalilesizuwuk.pdfIn PDF document text
    • https://cdn.sqhk.co/febenapox/jfEgibe/neutralizer_definition_example.pdfIn PDF document text
    • http://tokio-2020.fun/wosomop93f81.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407302/normal_604dca16ca42a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://razogop.epizy.com/brave_frontier_2_mod_apk_android_1.pdfIn PDF document text
    • http://labotiz.rf.gd/case_files_internal_medicine_fifth_edition.pdfIn PDF document text
    • http://tatovod.epizy.com/68744410591.pdfIn PDF document text
    • http://felowiroviduga.rf.gd/bhairava_ashtakam.pdfIn PDF document text
    • http://luzeparuzibez.rf.gd/anon_goggle_lens_color_guide.pdfIn PDF document text
    • http://supuwevul.atwebpages.com/an_introduction_to_mechanics_by_kleppner_and_kolenkow_download.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_off0000d790.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD790 5476 bytes
SHA-256: 1e43f75c2590fe2afce2d518ac4fe23735aa1d08bb8b0056dfdb9231709bda01
font_01_sfnt_off0000ea28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA28 10408 bytes
SHA-256: a45d2d98a8ceb4e2cafca7e0d1a695f8eda7c794d81e7fc02fe75afd60e895ca

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