Malicious PDF — malware analysis report

Static analysis result for SHA-256 52cc8403364f9193…

MALICIOUS

PDF

77.4 KB Created: 2021-03-22 02:25:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 489e812d2fe978eeca475ee989ddbdab SHA-1: 5bf21b9c6fd808fb3c68c564afdfb4b0fa401804 SHA-256: 52cc8403364f91938e2899b3959b979db0cb8441099707120439ee53f383d4f8
156 Risk Score

Malware Insights

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

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 0.9991

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/strik?utm_term=as+the+war+for+independence+began+britain+had+the+advantage+of PDF link annotation
    • https://pusazaninad.weebly.com/uploads/1/3/4/3/134358808/jezifilozozufaj.pdfIn PDF document text
    • http://tosefabebiribow.scienceontheweb.net/kobalt_7_inch_tile_saw_reviews.pdfIn PDF document text
    • https://cdn.sqhk.co/buzomesil/rjdgh5r/22035490896.pdfIn PDF document text
    • http://dream-stat.ru/defiant_digital_timer_wiring_diagramvmoe9.pdfIn PDF document text
    • https://cdn.sqhk.co/manaruparil/OhhVijo/video_meme_maker_youtube.pdfIn PDF document text
    • http://ropisunofo.mygamesonline.org/40k_9th_edition_full_rulebook.pdfIn PDF document text
    • http://foxiduwanati.mygamesonline.org/murray_46_inch_deck_belt_diagram.pdfIn PDF document text
    • http://alkim.xyz/como_convertir_pulgadas_a_centimetros_en_excelt5r72.pdfIn PDF document text
    • https://cdn.sqhk.co/pijavagoke/NqrCiji/wimerajegosevisixujoti.pdfIn PDF document text
    • https://jerejadudet.weebly.com/uploads/1/3/0/7/130738914/6682175.pdfIn PDF document text
    • https://nipukidifa.weebly.com/uploads/1/3/0/8/130873732/50289a8ed4c5f6a.pdfIn PDF document text
    • http://cuzinfo.ru/aadhaar_card_print_out_onlinef7rnd.pdfIn PDF document text
    • http://bisibometixo.mywebcommunity.org/nomafuzigirubo.pdfIn PDF document text
    • https://jerefukixuludew.weebly.com/uploads/1/3/4/6/134686450/mezuso-lirebori-nunogatawavu.pdfIn PDF document text
    • https://sirunolova.weebly.com/uploads/1/3/5/3/135303996/nuligubav.pdfIn PDF document text
    • http://secureappeal.com/voresomebuvonaburezudawijlhdz4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/pevuwarobuvowa/synthesis_of_nylon_66_lab_report.pdfIn PDF document text
    • https://s3.amazonaws.com/rabewiruzitewa/naririxitosonoteragiguz.pdfIn PDF document text
    • http://likutolejit.onlinewebshop.net/rapid_diagnostic_tests_for_malaria_parasites.pdfIn PDF document text
    • https://s3.amazonaws.com/wixamupelinere/gavarimemuruxazol.pdfIn PDF document text
    • https://s3.amazonaws.com/mexijegedakol/mofun.pdfIn PDF document text
    • https://s3.amazonaws.com/sowirutelevolur/peaky_blinders_theme_song_320kbps.pdfIn PDF document text
    • https://s3.amazonaws.com/rimepusox/zefakodomebiwoxoxaf.pdfIn PDF document text
    • https://s3.amazonaws.com/nafoxuda/2004_buick_rendezvous_service_traction_system_light.pdfIn PDF document text
    • https://s3.amazonaws.com/kukazowox/gozuxidaxatalebokiz.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_off0000f0ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0AD 5668 bytes
SHA-256: 95f25c0c36861050a86e315c233eadeafd5e3fee0c609b5e368e4a93a432214b
font_01_sfnt_off00010404.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10404 10444 bytes
SHA-256: a102ff0a84412b4a666f350e855c724b98223e5e4d3468202a11baa5d104f28e

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