Malicious PDF — malware analysis report

Static analysis result for SHA-256 48626a4b1189649a…

MALICIOUS

PDF

80.9 KB Created: 2021-03-09 19:01:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 986d9ee9d5309f209e621bbd67474226 SHA-1: 1c55b9178cf258516317fa51bbf99766917609a1 SHA-256: 48626a4b1189649a399f74851ab4e85685161b01be95ec07960c475e54a684a1
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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.
  • 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://vilenefex.ru/123?utm_term=cain++for+pc PDF link annotation
    • http://gisoboxizaza.mygamesonline.org/10410444534.pdfIn PDF document text
    • http://taforojujutusig.mygamesonline.org/mini_14_vs_ar_15_shtf.pdfIn PDF document text
    • http://vijevejumozugim.sportsontheweb.net/the_monkeys_paw_short_story_analysis.pdfIn PDF document text
    • http://vojituvidur.iblogger.org/complex_qualified_business_income_deduction_worksheet.pdfIn PDF document text
    • http://vifijes.22web.org/full_form_of_aka.pdfIn PDF document text
    • https://noruwapawufibem.weebly.com/uploads/1/3/0/9/130969999/2348745.pdfIn PDF document text
    • http://tadugebakonuged.getenjoyment.net/how_to_calculate_z_score_table.pdfIn PDF document text
    • https://pelabinal.weebly.com/uploads/1/3/1/3/131379552/jefimenejiz_mudano_kedofexo_gobariretima.pdfIn PDF document text
    • http://tevalevas.22web.org/retoboredarul.pdfIn PDF document text
    • http://xijipeva.mypressonline.com/store_manager_roles_and_responsibilities.pdfIn PDF document text
    • https://kukibutojiw.weebly.com/uploads/1/3/0/7/130775835/dupuxavoxefu_lagigewig.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dopovis.myartsonline.com/25809378466.pdfIn PDF document text
    • http://dugubokig.rf.gd/48716968243.pdfIn PDF document text
    • http://sudimomovaw.epizy.com/how_do_you_take_apart_a_washing_machine.pdfIn PDF document text
    • http://perimomu.epizy.com/lysistrata_analysis.pdfIn PDF document text
    • http://visugog.myartsonline.com/30171063124.pdfIn PDF document text
    • http://lulawutereb.rf.gd/rivafatokamugawifar.pdfIn PDF document text
    • http://ribizotujigotok.rf.gd/xixozudadazabumafo.pdfIn PDF document text
    • http://sofibimibojas.myartsonline.com/school_counselor_job_description.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b83d0691-f4d5-4f13-ab6d-49284213e833/what_does_stimulus_check_look_like_on_bank_statement.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/add561d2-36d2-4a33-903b-b72a25a5762c/alpine_ina-w900_gps_antenna.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/212e4a05-744c-4c56-a61e-47bfb5aae4c5/trimble_writing_with_style.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010098.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10098 4704 bytes
SHA-256: 9ea39a8ab2a25ba23a9b7d1cf17126d0da7fd0bc20e6aa4ad16f8b7c74f2f404
font_01_sfnt_off000110a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110A8 11140 bytes
SHA-256: 1a333b68d4b3e89db05b98b6e1ce1ab701cb99cda0b1985fa2166d7538198b1a

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