Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf72ceb73504553e…

MALICIOUS

PDF

72.7 KB Created: 2021-03-12 11:37:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: d0e5c8c76068e7631cfe1ea05c5b84f4 SHA-1: 186bf2edd5bbe01042de526285bc0cc441968918 SHA-256: cf72ceb73504553e27f41da7fd9019df82d8bc4aa38910d4f3c97cb5dd33c4da
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://zajinet.ru/award?keyword=indefinite+pronoun+worksheet+answer+key+pdf PDF link annotation
    • http://vosajizegek.mypressonline.com/94491001961.pdfIn PDF document text
    • https://famuzupowaja.weebly.com/uploads/1/3/1/4/131406758/fezexarelejimawi.pdfIn PDF document text
    • https://kejobogufepemis.weebly.com/uploads/1/3/0/7/130775396/dubenepo.pdfIn PDF document text
    • http://pevazaw.mypressonline.com/65383284737.pdfIn PDF document text
    • http://wodekenizowa.getenjoyment.net/nawunajisejen.pdfIn PDF document text
    • https://cdn.sqhk.co/diwamukef/fhb7gfK/23583114255.pdfIn PDF document text
    • https://cdn.sqhk.co/dekavaka/aigdgjD/playstation_store_discount_codes_september_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/bobudozoke/7ihijeC/apache_tomcat_7._0._85.pdfIn PDF document text
    • http://itawegan.space/sovifejoja8wxuc.pdfIn PDF document text
    • http://wozupabalaviv.medianewsonline.com/47087246951.pdfIn PDF document text
    • https://sonanibiforopo.weebly.com/uploads/1/3/2/7/132710732/ae3749c21.pdfIn PDF document text
    • http://setlyb.online/xewopipupiduruvoxemen69ss1.pdfIn PDF document text
    • https://cdn.sqhk.co/melalisopapu/iaiigcC/nature_sounds_waterfall_and_birds.pdfIn PDF document text
    • http://dostafood.xyz/pepudefepibugopupotn42o.pdfIn PDF document text
    • http://drive4mclaneeffingham.com/22023261980dwbsp.pdfIn PDF document text
    • http://itgermany.net/mijagazatimadafoleznb7zp.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://790dbb52-30bf-47b2-9b56-a69c72000c25.filesusr.com/ugd/f9d4cd_8eb774bc40cc420c919fad1671285e06.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xabalaru/curriculum_guide_in_tle_8_handicraft.pdfIn PDF document text
    • https://a1d3e036-d9a1-4be1-9d2f-eedbb581cb22.filesusr.com/ugd/3ce946_f82d18b212934aba8ca0d308b055805c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gofiguj/nopopikedidogoveku.pdfIn PDF document text
    • https://s3.amazonaws.com/verirejon/what_will_happen_if_i_do_1000_push_ups_a_day.pdfIn PDF document text
    • https://01dc7cc6-b8ed-446e-8cc8-1ad78882ed38.filesusr.com/ugd/e23fbb_4ad5974a33654851993321dfee1f7ec5.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kodipopujufipig/metabolic_alkalosis_treatment_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/senodiw/pizajivijaxesesas.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_off0000dfdc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFDC 5292 bytes
SHA-256: 8dacd44c8ea8475650367eb10e7da67160b47990ce6c8ce81c3909b808a4a087
font_01_sfnt_off0000f1f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1F5 10176 bytes
SHA-256: d80e62a1590c73d38e30ac1b1ceaa9fe9a088b3487b80ed0eccd4d66dd80c6fc

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