Malicious PDF — malware analysis report

Static analysis result for SHA-256 baa8c364164953e7…

MALICIOUS

PDF

72.7 KB Created: 2021-03-09 12:07:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 46fbc38c2c98912af289d917ceaa7675 SHA-1: ef4a4e41fadfa565e9c5b5243378988654b8c5be SHA-256: baa8c364164953e71b917ab92b8c250764d732675222917559d0d735d69d75e4
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://druttle.ru/wix?keyword=the+shredded+chef+pdf PDF link annotation
    • https://vekatofe.weebly.com/uploads/1/3/0/7/130775682/1842816.pdfIn PDF document text
    • https://cdn.sqhk.co/baluwofuk/oZhhqgj/denufexojedutem.pdfIn PDF document text
    • https://cdn.sqhk.co/vameduvide/r6ghhFD/play_games_earn_money_canada.pdfIn PDF document text
    • https://wefogazasu.weebly.com/uploads/1/3/4/8/134880183/sejonupa_gupogowov_dedepodudavepuk_fulovod.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://acfcda0b-1795-4b40-aedc-9a0bc13047ce.filesusr.com/ugd/89c6ad_c6d2d5f43ac740e6a5821fe76dbc8f5f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sasufufa/kabumadeliroraluzujevafuw.pdfIn PDF document text
    • https://s3.amazonaws.com/dopugaxelelema/74590360777.pdfIn PDF document text
    • https://s3.amazonaws.com/wupagivoz/the_secret_book_by_rhonda_byrne_in_hindi.pdfIn PDF document text
    • https://s3.amazonaws.com/sowewazulejewi/allama_iqbal_open_university_date_sheet_ba.pdfIn PDF document text
    • https://s3.amazonaws.com/wezukep/nalowupojakixanubu.pdfIn PDF document text
    • https://0df6220b-9630-4647-aab6-0d9db69b9d59.filesusr.com/ugd/8b97dd_df121891aa244b02bafabe1bdaf99dde.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/babetafaperaxov/meilleur_livre_pour_apprendre_l_espagnol.pdfIn PDF document text
    • https://s3.amazonaws.com/xeropizuwe/36008686249.pdfIn PDF document text
    • https://s3.amazonaws.com/godewumazek/birds_pictures_for_colouring.pdfIn PDF document text
    • https://45f0f727-c607-4398-b3b7-8b42e23b21b2.filesusr.com/ugd/0a84ca_1dca861e9ffd427dba2381b3e11c4189.pdf?index=trueIn PDF document text
    • https://8c285b57-3156-47ce-881b-df665acc117b.filesusr.com/ugd/8d46c2_5b035884f57941c3b0645d90fb639a0b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vuforewebub/touch_of_class_catalog_promo_code.pdfIn PDF document text
    • https://s3.amazonaws.com/faluzotixupi/43970304552.pdfIn PDF document text
    • https://aa3bb5c3-2bd4-4791-9e2a-6e31d5009b04.filesusr.com/ugd/60e703_238f3c8521b24a849d4d506f3272a27b.pdf?index=trueIn 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_off0000e0e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0E9 4948 bytes
SHA-256: 567f2bad0f54c777fcd980c92bf61212f58702eecc4a442320d3d8a30ea5caee
font_01_sfnt_off0000f1bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1BF 10488 bytes
SHA-256: bada4d53860d783e659da9a8e95a2f412035180b226ae74938c6a7ff423930f6