Malicious PDF — malware analysis report

Static analysis result for SHA-256 fed6faa32c0da3b7…

MALICIOUS

PDF

70.9 KB Created: 2021-03-02 16:16:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 67cc6ee9f3edd6a58c2b90bdec2c00cd SHA-1: 59ce68f1079bbc896f21af1000a1d992207fda2d SHA-256: fed6faa32c0da3b73992d6a7d5436f1155a6ff4b79119942bb2e5c9ed9072104
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/award?keyword=the+standard+insurance+dental+provider+phone+number In PDF document text
    • https://cdn.sqhk.co/bifoligi/qDicheD/wibofi.pdfIn PDF document text
    • https://cdn.sqhk.co/piravasufinu/YnjcyOJ/vigevapu.pdfIn PDF document text
    • http://nejevefivi.mypressonline.com/how_to_get_the_dog_filters_on_snapchat.pdfIn PDF document text
    • http://nenegifivujaxu.mypressonline.com/self_care_checklist_therapist_aid.pdfIn PDF document text
    • http://gefosezidubajoz.scienceontheweb.net/how_many_calories_does_sweet_corn_have.pdfIn PDF document text
    • http://sunuzajiwexo.22web.org/19424693675.pdfIn PDF document text
    • http://xenalebosob.scienceontheweb.net/67587802328.pdfIn PDF document text
    • http://nopotaz.medianewsonline.com/12938764269.pdfIn PDF document text
    • https://cdn.sqhk.co/lajawawinu/giHrJaU/rocketman_song_listen.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tokukemojitiwil.epizy.com/timowipowuxifedizezobuf.pdfIn PDF document text
    • http://gogujigasad.onlinewebshop.net/vizozubukenonegudeposaxo.pdfIn PDF document text
    • http://nanixalo.rf.gd/insert_file_in_excel.pdfIn PDF document text
    • http://gafelen.epizy.com/measles_encephalitis_case_report.pdfIn PDF document text
    • http://xawavejemefo.epizy.com/debewedujuxixarejazubex.pdfIn PDF document text
    • http://pulilubanis.rf.gd/63717337712.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_off0000d82e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD82E 5460 bytes
SHA-256: 55f2cd005e3edd2d720c90fc83b35b3b65291cbeefcd11389e31b9134780df5c
font_01_sfnt_off0000ea94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA94 10460 bytes
SHA-256: 95a4cd115551715f27a5c35b192809dd32e969a8850a321b11882f116166b5c4