Malicious PDF — malware analysis report

Static analysis result for SHA-256 554baf18c3cc6d32…

MALICIOUS

PDF

72.7 KB Created: 2021-03-06 07:04:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: ab8e1ead81db8bf55da986defc3552b8 SHA-1: e51d342191cb4e226a730ded9422875fb4ada0cd SHA-256: 554baf18c3cc6d32aee4f8e19aa2abc59a55a43adb55011285cb3974b428b9ca
186 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.
  • 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://seumenha.ru/wix?keyword=anthropology+final+exam+answers PDF link annotation
    • https://xadajosawot.weebly.com/uploads/1/3/1/6/131636584/6184257.pdfIn PDF document text
    • http://worabipupe.mypressonline.com/15771227689.pdfIn PDF document text
    • http://kewovega.22web.org/37111179984.pdfIn PDF document text
    • https://jafipununevov.weebly.com/uploads/1/3/0/8/130814040/9979449.pdfIn PDF document text
    • https://nusutaligufobam.weebly.com/uploads/1/3/5/3/135393176/sanekujadetoxi-xoxevovaz-fepox-padejegoli.pdfIn PDF document text
    • https://nejavedejelije.weebly.com/uploads/1/3/4/3/134336697/9736529.pdfIn PDF document text
    • https://varemajog.weebly.com/uploads/1/3/4/5/134585454/9a0a3.pdfIn PDF document text
    • https://sadaxolofomet.weebly.com/uploads/1/3/1/4/131453623/773712.pdfIn PDF document text
    • http://befotuke.mywebcommunity.org/how_many_cubic_feet_is_an_apartment_size_fridge.pdfIn PDF document text
    • https://dakikizubebara.weebly.com/uploads/1/3/4/8/134889455/3968273.pdfIn PDF document text
    • https://deserekinubolid.weebly.com/uploads/1/3/4/3/134319780/4551220.pdfIn PDF document text
    • https://viledilexemapol.weebly.com/uploads/1/3/4/6/134698440/xupedanevijepe.pdfIn PDF document text
    • https://vulodimov.weebly.com/uploads/1/3/4/8/134880101/lubavexasox-nixitulosotuk-xoduk-mobufanaruzej.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/c8139bf6-413c-4db8-8432-88ba839e068f/rigavobaridatazefe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/714ae588-fd4c-4b94-8d8a-7a331d8dea6a/universal_studios_stairs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e1b4752-8561-47f4-b0e4-49b940ef7c71/78220150942.pdfIn PDF document text
    • http://dujawupiraxep.rf.gd/biology_eoc_exam_review_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ebfb363-cb86-4f97-99cf-8772e376c6f3/harry_potter_and_the_sorcerers_stone_book_pages.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63907ad4-fcbb-4116-ac2a-839258cb7eed/wilokopetebovamara.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_off0000e06b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE06B 5568 bytes
SHA-256: a2750c99d6b910cb9b67d5b6e5209d364896d622ba913ad68963609ff18295f7
font_01_sfnt_off0000f358.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF358 10076 bytes
SHA-256: fad3cee0fa886c059fe65f0f35064b80a7d514f36577b8749a3b5f9c29d47506

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