Malicious PDF — malware analysis report

Static analysis result for SHA-256 346e757c1dc1a52b…

MALICIOUS

PDF

110.4 KB Created: 2021-04-02 07:46:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 8671957e4512695a455de60f4400175f SHA-1: 5be46bc7bec0265ed1646c34e8563ffea72963cd SHA-256: 346e757c1dc1a52b1ebce35c831a4c325af1babb2b1b2ec16d3c0e1b749a2ca6
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 0.9994

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://jottigo.ru/award?keyword=orphic+argonautica+pdf PDF link annotation
    • http://winwites.space/what_are_the_major_arcana_cards_in_a_tarot_deck0uwtb.pdfIn PDF document text
    • http://closemaze.com/mozart_bassoon_concertosvmt2.pdfIn PDF document text
    • http://drovazvenigorod.ru/zovukisoi3wr9.pdfIn PDF document text
    • http://lawobulobatidu.22web.org/sea_fishing_tackle_for_sale_ebay_uk.pdfIn PDF document text
    • http://mejikisevupepen.iblogger.org/bahrain_visa_application_form_for_pakistani.pdfIn PDF document text
    • http://rutenowataba.iblogger.org/laletoxi.pdfIn PDF document text
    • http://znakomstva18x.site/xizarozamopufadusotujoki9ji6p.pdfIn PDF document text
    • http://gifofebitatine.iblogger.org/fumewowa.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/nowonovege/meditation_guided_imagery.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c0b4325-8a23-4150-bf89-d5af0be7bffe/is_there_a_free_gps_app_for_iphone.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4fcd73e3-2863-42b8-bbc2-5e50e01d0013/donofobokuvinita.pdfIn PDF document text
    • http://gawusozuf.epizy.com/linizimidif.pdfIn PDF document text
    • http://titegerekarirov.rf.gd/ankusam_video_songs_free.pdfIn PDF document text
    • https://s3.amazonaws.com/devuxuzejozam/ruvasasexux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3fd5081-9fd3-4acb-8317-616a99cd2178/principal_business_activity_code_florida.pdfIn PDF document text
    • http://pixagese.rf.gd/53165506092.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee6753c2-2441-4445-bfa9-b060288a40a6/14471039512.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18eac219-dc8f-4a52-899e-5abe5fca2704/74829174631.pdfIn PDF document text
    • http://gebilame.epizy.com/34962164890.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/185a7670-7bba-4e2f-8e00-df1f8d2c8da4/94435392391.pdfIn PDF document text
    • http://digegaleviverab.rf.gd/perry_anderson_el_estado_absolutista_resumen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd4e7980-1951-4747-bcea-b64e2070bcbd/cen_tech_battery_charger_desul.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a18656a6-e71d-4406-b03e-3300f9910f6f/fisher_price_toy_box_bench.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000172f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x172F7 5236 bytes
SHA-256: da797129f036df6043e81969aff546985a81948a464a453e7926882dfbd50a6f
font_01_sfnt_off000184c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x184C1 11396 bytes
SHA-256: 8638beabe6b37d655a60fb4677c35bf70479623ce2ad97e0d7fc97a3213d6142

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