Malicious PDF — malware analysis report

Static analysis result for SHA-256 404ce145aae82807…

MALICIOUS

PDF

69.5 KB Created: 2021-03-09 09:47:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 5ebccf6bde855bd24c1621f09b25cd46 SHA-1: b756f18ba93d75c416731b7ae7d4d3a1c19dbb1c SHA-256: 404ce145aae8280719f270b18badedd71c65dbc6485e639113eff344f62fdd38
126 Risk Score

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://druttle.ru/award?keyword=welding+workbook+pdf PDF link annotation
    • https://cdn.sqhk.co/rovifatira/aK3FhhZ/86064168834.pdfIn PDF document text
    • http://riniwodifole.medianewsonline.com/yard_yahtzee_score_card_printable_free.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384144/normal_602bafcea0a63.pdfIn PDF document text
    • https://cdn.sqhk.co/pomorezolo/dhihhij/scent_of_a_woman_speech_by_al_pacino.pdfIn PDF document text
    • http://kirakexig.mypressonline.com/98113628375.pdfIn PDF document text
    • https://cdn.sqhk.co/kafekogi/Whejigg/hmrc_grant_claim_calculator.pdfIn PDF document text
    • https://cdn.sqhk.co/wutalididow/TEjhjh0/puzitufisenegenob.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426545/normal_5fd2d14d8e27c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462379/normal_5fe6bf7403e44.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452206/normal_5ff8ebea95ac1.pdfIn PDF document text
    • http://zinepifulew.22web.org/what_element_of_hair_design_defines_form_and_space.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf654882-a267-4ee6-903e-b7942820ee41/amazon_kindle_app_how_to_use.pdfIn PDF document text
    • http://sabiwilurase.atwebpages.com/kad_emule_lista_aggiornata.pdfIn PDF document text
    • http://majoxokusixapav.epizy.com/belmont_care_home_cqc_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c98934e-3b12-42af-9a07-958c5901579e/singer_6212c_bobbin_size.pdfIn PDF document text
    • http://famereraba.epizy.com/78587340011.pdfIn PDF document text
    • http://diwavubodinaroj.myartsonline.com/mofado.pdfIn PDF document text
    • http://ximolamerojizud.epizy.com/68529353661.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38a97226-bae2-4731-bddb-a3228a693b1f/navy_retirement_eval_examples.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2759dc4-f1ab-48fe-9133-a7d4658ce029/pexijaxabovoso.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_off0000d4b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4B7 5128 bytes
SHA-256: c6e9d83b363f794372b17a2ecee5c166308eb3b1d38f0f83930599b0fc8c91bf
font_01_sfnt_off0000e659.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE659 10184 bytes
SHA-256: 5e034a869ad1c99f9a73838d5bf9e3d0823f7318226f149119766df34f4d733d

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