Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6224cefa7b3ad32…

MALICIOUS

PDF

78.7 KB Created: 2021-03-16 10:12:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3beb9d3ef0f7b45eb7b0d69027d53ad0 SHA-1: 5be07078fa42926911c575addc0a110a96ae58f1 SHA-256: b6224cefa7b3ad326dd09f6d18a7dacc0e7f78fa1d0794aa48c2c101fa5a6290
126 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including ML and ClamAV, indicating malicious intent. The document body, though heavily obfuscated, contains references to 'Celine Dion Titanic songs' and metadata suggesting it was generated by wkhtmltopdf, likely as a lure. The presence of numerous external URIs, many pointing to disposable domains and link farms, strongly suggests a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://soxebez.ru/123?utm_term=celine+dion+titanic+songs
    • http://tehnotop.site/gikaduragapivopukosologfgy4v.pdf
    • https://cdn.sqhk.co/kokojisip/fWjcRpA/tvd_cast_pics.pdf
    • https://bugomalaked.weebly.com/uploads/1/3/5/3/135324661/59aa5e.pdf
    • https://cdn.sqhk.co/tulotunofuz/2Te4jbP/fagetetizexipugejozejig.pdf
    • https://totijavefukaja.weebly.com/uploads/1/3/4/7/134705726/2614686.pdf
    • https://kuruxeronujupo.weebly.com/uploads/1/3/4/4/134477992/legelugawasusiwo.pdf
    • http://snegny.com/fine_art_cv_templatetumui.pdf
    • http://italywom.space/naming_alkenes_worksheet_docvjj3g.pdf
    • https://wawokosekipazas.weebly.com/uploads/1/3/1/4/131452886/2836291.pdf
    • http://podipotekoi.ru/39111407338ztbet.pdf
    • https://tubozabuzimez.weebly.com/uploads/1/3/4/8/134878922/1001324.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://faxarase.rf.gd/clasificacion_de_animales_invertebrados.pdf
    • https://s3.amazonaws.com/nitidadufetenu/landline_phones_with_answering_machine.pdf
    • https://uploads.strikinglycdn.com/files/3351f953-12e5-4f57-8883-c7dbc71bbc97/866540837.pdf
    • https://uploads.strikinglycdn.com/files/c32119f4-a316-425a-9255-01fa6856294d/is_alcatel_3l_a_good_phone.pdf
    • https://s3.amazonaws.com/sizabo/lippo_general_insurance_tbk_annual_report.pdf
    • https://s3.amazonaws.com/bulozor/xaxalamolozitulunif.pdf
    • https://uploads.strikinglycdn.com/files/7faf4617-76f6-44e3-8297-52b0ed7ff169/mosupitenupirigada.pdf
    • http://dupepasanu.epizy.com/dorunodilabev.pdf
    • https://uploads.strikinglycdn.com/files/fdf4474f-1f37-4ea4-8c09-8baf2c880777/6499318646.pdf
    • https://uploads.strikinglycdn.com/files/6c94cdb4-8c16-49a6-beeb-1051d993a923/gospel_of_peter_resurrection_story.pdf
    • https://s3.amazonaws.com/dupula/21197328509.pdf
    • https://s3.amazonaws.com/dogazisuze/b_form_dna_helix.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_off0000f4b7.bin
54bd87a491e1bf24e265ad4b995abd1ca9511170e1284095039009562e2deae2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF4B7 4916 bytes
font_01_sfnt_off00010580.bin
ba45d43cdea8d6f73ca84936a3e01a3c64395adc43b6c675ef7d688b4cae65c3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10580 11332 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.