Malicious PDF — malware analysis report

Static analysis result for SHA-256 bec69458257dac19…

MALICIOUS

PDF

76.0 KB Created: 2021-03-15 23:02:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: c71423db44f676b1f6374eefb85cb555 SHA-1: 0f30f07b19599d56265ffa71055867dc774f9d48 SHA-256: bec69458257dac19147c83bfd93ec00c6476c2bc03838fcf04dd8c17f9ab3e06
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 0.9997

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://baarspo.ru/wix?keyword=box+head+hacked+unblocked PDF link annotation
    • http://rigojakivuvemi.iblogger.org/formation__distance_agent_immobilier_belgique.pdfIn PDF document text
    • https://demepitogiwod.weebly.com/uploads/1/3/4/0/134097880/4917946.pdfIn PDF document text
    • http://hookup153.space/wagner_flexio_590_loweszvhfp.pdfIn PDF document text
    • http://mir23.xyz/archicad_furniture_libraryxlgpo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417535/normal_602b5d9d69e5e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366984/normal_6012517226aa7.pdfIn PDF document text
    • http://stikc.xyz/warukesuvugaro1zsy2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490934/normal_604e1ecf5001e.pdfIn PDF document text
    • http://alexandreablog.com/93488346198yhfda.pdfIn PDF document text
    • http://timecodes.net/lasko_fh500_fan__space_heater_combo_tower_42_inch_white0k8ln.pdfIn PDF document text
    • http://ins.expert/6159489530lha64.pdfIn PDF document text
    • http://nuviteb.22web.org/club_car_carryall_ii_service_manual.pdfIn PDF document text
    • http://tegor.xyz/what_are_the_8_logical_fallaciesz0w14.pdfIn PDF document text
    • https://fojugifobuko.weebly.com/uploads/1/3/5/3/135328464/sexiwititajopu-mudujenowot.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/jiwisi/essex_county_clerk_cover_sheet.pdfIn PDF document text
    • http://wusepobokajed.rf.gd/agent_agreement_template_iccrc.pdfIn PDF document text
    • https://s3.amazonaws.com/jazofi/powerpoint_presentation_timeline_template_free.pdfIn PDF document text
    • https://s3.amazonaws.com/xarojapi/38946773331.pdfIn PDF document text
    • https://s3.amazonaws.com/jenisozazewubo/zusomizixokuni.pdfIn PDF document text
    • https://s3.amazonaws.com/makumapikeze/classic_fine_food_catalogue.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dc2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC2D 4828 bytes
SHA-256: 60a76393cafd269ca951788a8b4adede3367ed8b534666440e1c895cc47b55ea
font_01_sfnt_off0000ec87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC87 12560 bytes
SHA-256: 460c8a36f6fa0aefa1fc7c5a671ab9ee4aec91fdaec66fdbf132bf6f71c265db
font_02_sfnt_off000114f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114F7 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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