Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e3e6510416a9fc9…

MALICIOUS

PDF

78.8 KB Created: 2021-05-14 10:41:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 0488fb0ce1ff75f2305a893037f693e7 SHA-1: fdc222f0683f89dcb0cecb93bf718a720930d755 SHA-256: 7e3e6510416a9fc9974876e54b09bb243b52cd31b5660e5ea7fd6b479ab48db8
184 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to disposable hosting and redirector infrastructure, indicating a phishing or scam attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The embedded links are designed to lead users to potentially harmful websites, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wb?keyword=canon%20inkjet%20mp470%20ink%20cartridge In PDF document text
    • http://lafowesezojo.scienceontheweb.net/dexafuwewavomitunuvemu.pdfIn PDF document text
    • http://walawatomu.mywebcommunity.org/44445398314.pdfIn PDF document text
    • http://punavuvipufov.sportsontheweb.net/how_to_calculate_two_tailed_z_test.pdfIn PDF document text
    • http://nuvoked.22web.org/48475539595.pdfIn PDF document text
    • http://igcopyrightverify.com/gafasoxagasejosolubow0an5.pdfIn PDF document text
    • http://vezerfa.xyz/cbs_news_dc_reportersoak1r.pdfIn PDF document text
    • http://kixamugefuwa.22web.org/15348853051.pdfIn PDF document text
    • https://mevidumufodu.weebly.com/uploads/1/3/2/3/132303219/8280455.pdfIn PDF document text
    • http://wiboratiraveguw.mygamesonline.org/duvap.pdfIn PDF document text
    • http://garantiya62.ru/22000370031v5uje.pdfIn PDF document text
    • https://fimedezederuru.weebly.com/uploads/1/3/4/8/134884956/1464548.pdfIn PDF document text
    • http://afracheat8.xyz/57987702497n4vw9.pdfIn PDF document text
    • http://saniwofixapu.mygamesonline.org/avivamento_do_pais_de_gales.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nisuzadusidu.epizy.com/46697798661.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a411cf06-5a2e-461e-a2ec-354e61fb7fd1/palabras_agudas_llanas_o_graves_esdrjulas_y_sobreesdrjulas_ejemplos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9354aea5-3996-4b5b-af4f-3412f7f262c3/boraf.pdfIn PDF document text
    • http://xebizeluzifavi.rf.gd/87852497862.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8bc5d63b-076b-42f9-b2ff-66adceb08766/gobuwonatena.pdfIn PDF document text
    • http://wiwazez.epizy.com/rodewodizavepadavezomoka.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b3064bc-8bad-4a65-8942-c633d14b7632/how_does_a_nuclear_reactor_work_step_by_step.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6b78b63-22b0-44dc-b975-ed8ca58b509c/govenukewufatajenezexumub.pdfIn PDF document text
    • http://dapizodipe.myartsonline.com/45362970013.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_off0000f684.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF684 5536 bytes
SHA-256: 9ef15ef2e3b3ec314d17f4253018df64f4d51ad44132bcb8b4f6a2393b9f0734
font_01_sfnt_off00010958.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10958 10608 bytes
SHA-256: d2525a8900b7a3745a244bc23fb98d0e8fdfc0530801172e586b685c704d0166

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