Malicious PDF — malware analysis report

Static analysis result for SHA-256 92366405d64bbe71…

MALICIOUS

PDF

69.0 KB Created: 2021-03-02 02:19:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 0488e95356f4985e2d06adbc93799290 SHA-1: 2b993c0a2ae95d7626bfd308d98c6a32f5b407b6 SHA-256: 92366405d64bbe71d8c7a100df829f01d47cdc45fad0845f6fc806ac802ecbd7
126 Risk Score

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-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://botokaw.ru/wix?keyword=choices+key+hack+2020 PDF link annotation
    • http://naliputa.mywebcommunity.org/patriotic_pakistani_meaning_in_urdu.pdfIn PDF document text
    • http://lobabinuladeri.medianewsonline.com/jadasiwo.pdfIn PDF document text
    • http://jikusofare.mywebcommunity.org/the_art_of_talking_to_anyone_book_in_hindi.pdfIn PDF document text
    • http://xedeporib.medianewsonline.com/how_to_say_thank_you_for_comments_on_facebook.pdfIn PDF document text
    • https://cdn.sqhk.co/wuvotalek/ygjMSLp/ice_cream_truck_music_box_ebay.pdfIn PDF document text
    • http://fexewivu.iblogger.org/madero.pdfIn PDF document text
    • http://mawosatejojeka.sportsontheweb.net/pexivetex.pdfIn PDF document text
    • https://cdn.sqhk.co/piredonina/whhiJCz/8210824779.pdfIn PDF document text
    • http://mavaxur.mywebcommunity.org/kitchenaid_ksm2fpa_food_processor_attachment_with_dicing_kit.pdfIn PDF document text
    • https://cdn.sqhk.co/satukevaguka/jfr6vpk/jezoweginafikilakudag.pdfIn PDF document text
    • https://cdn.sqhk.co/wusuzevomo/lmmigdU/zixuwinesolep.pdfIn PDF document text
    • https://cdn.sqhk.co/lupobikud/igciggh/cut_it_out_idiom_in_a_sentence.pdfIn PDF document text
    • http://zumewidife.mygamesonline.org/gakorek.pdfIn PDF document text
    • http://poguvezi.22web.org/utorrent_android_tv.pdfIn PDF document text
    • http://gamecheats.win/choices/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kutoduno.rf.gd/how_to_attach_dremel_attachments.pdfIn PDF document text
    • http://rupewilalefapok.rf.gd/buyersguide._macrumors._com_apple_tv.pdfIn PDF document text
    • https://s3.amazonaws.com/sudevejerifu/goweden.pdfIn PDF document text
    • https://s3.amazonaws.com/salosibejodod/baltimore_city_police_crime_reports.pdfIn PDF document text
    • http://rodedewezijore.atwebpages.com/34721420773.pdfIn PDF document text
    • http://goruwon.epizy.com/jandy_chlorine_generator_error_code_120.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_off0000cacd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCACD 5104 bytes
SHA-256: 0caafb939a21631468a695d7ae864e0bdf86d5b1d5e53b242643dc53f03f6029
font_01_sfnt_off0000dc25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC25 2116 bytes
SHA-256: 316f78c6e162999e43ccb83d429ef85c46045bf1ac59c77d169faf589ecd4eba
font_02_sfnt_off0000e5ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5CE 9512 bytes
SHA-256: 19bdbdbf5aaabf2b9ae76e8b93c8925f008e32ba25d3f4bfa979481acbb5c189

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