Malicious PDF — malware analysis report

Static analysis result for SHA-256 08acb9f072e1244e…

MALICIOUS

PDF

67.7 KB Created: 2021-03-10 08:50:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 71bb1fa5a5cc7384ee2b33aa715ed53d SHA-1: 8884450e56b2a066ec4e00e0984f37a2a19db2c7 SHA-256: 08acb9f072e1244eae20923904e3a537452ff81877ed3ea407c05a8016d1ced3
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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.
  • 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://pelibifir.ru/wix?keyword=college+prep+algebra+simplifying+radicals+answers PDF link annotation
    • https://cdn.sqhk.co/bogovureg/7jdCvGB/phoenix_airport_to_grand_canyon.pdfIn PDF document text
    • https://masodorenos.weebly.com/uploads/1/3/0/9/130969057/246f4950f03e47.pdfIn PDF document text
    • http://zelumefepa.sportsontheweb.net/tegumekok.pdfIn PDF document text
    • https://bosijoputa.weebly.com/uploads/1/3/4/3/134317673/5876a59a00d.pdfIn PDF document text
    • https://monijakuxit.weebly.com/uploads/1/3/4/3/134362478/ledafere-gafuwafaxexufig-fukavozuvesuvit-tezofisiduvez.pdfIn PDF document text
    • https://povisegidugukab.weebly.com/uploads/1/3/1/8/131871963/1101887.pdfIn PDF document text
    • http://pumaguli.scienceontheweb.net/hoover_steam_mop_cleaning_pads.pdfIn PDF document text
    • https://cdn.sqhk.co/bosejadukifo/hcqicnD/52037187134.pdfIn PDF document text
    • https://cdn.sqhk.co/gukugifixija/gekhiig/dominos_discount_online_code.pdfIn PDF document text
    • https://cdn.sqhk.co/tepobugu/ibghifx/74900484174.pdfIn PDF document text
    • https://cdn.sqhk.co/midipumep/iBT1jfa/gifisid.pdfIn PDF document text
    • http://www.collegeprepalgebra.comIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://b1e6e3cd-24a2-426a-8b7d-e8f4bd81915b.filesusr.com/ugd/83e584_ce7244eea9db426da5339241b92f75fe.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/056f4c20-ca0c-4818-8fcc-106d3d9c06b7/the_poky_little_puppy_big_golden_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/613d4fd7-fb26-43ec-b9fe-d235562bf8ca/nikon_d40_manual_mode.pdfIn PDF document text
    • http://lojabupabavize.onlinewebshop.net/how_to_reset_a_westinghouse_tv.pdfIn PDF document text
    • https://28481333-1ef2-46fb-8ebf-d56c3f24acbc.filesusr.com/ugd/314c35_ddd1efa280e34fd89481902dcf71e476.pdf?index=trueIn PDF document text
    • https://6a24fdd2-d4a5-4c4b-882b-0f3115751bcf.filesusr.com/ugd/04e6f9_7dd9f54ed18f4621a8deb00528a103a8.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tarizirefevifab/2005_buick_lacrosse_cxs_problems.pdfIn PDF document text
    • https://s3.amazonaws.com/dudujopixejikug/81740354527.pdfIn PDF document text
    • https://fa886832-b9e3-4ce5-a98c-97da2614721f.filesusr.com/ugd/9f8050_1ca0fe6b20b54679bfa35af806b8f360.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/81492873-ad5d-4bde-b98d-983ef22ef8f3/tiremojoruga.pdfIn PDF document text
    • https://1e16da7b-5b4f-4122-a3c4-5c88c9d97cf7.filesusr.com/ugd/83f04e_49a499b08a204b5592a981c4fd36b3f5.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_off0000cb98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB98 5716 bytes
SHA-256: f50169036398757193bbe856ab11fb7ea34a0e10d130f588b6f877dc03610404
font_01_sfnt_off0000df0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF0B 10008 bytes
SHA-256: 5201b4d432589701c721a8a545694dbf6c732dbb72ac775c4a6b9e384e343f3d

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