Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c72ca50b9b5fbf6…

MALICIOUS

PDF

69.9 KB Created: 2021-03-01 09:47:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 64ab52f836d105d259f23d9ff43be16b SHA-1: 7009c9b08bba115566ad9685102d61e82567c5d9 SHA-256: 5c72ca50b9b5fbf6e7fb3a7f1607c2e8543b9b40f0abb4a720e4676f59bc0bc6
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://maypoin.ru/wix?keyword=reformation+worksheet+answer+key PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4468827/normal_5fc6435045e26.pdfIn PDF document text
    • https://cdn.sqhk.co/doginifa/ihtjdun/zunumisukapazoduzad.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411686/normal_5fc5bcc240ee4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443588/normal_60334097a50c4.pdfIn PDF document text
    • https://cdn.sqhk.co/petawelesup/gdFKhaF/navneet_kaur_dhillon_web_series.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420597/normal_601ec97255e1d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476133/normal_602ae2806c3e1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446789/normal_5ff003b776302.pdfIn PDF document text
    • http://rivesoguteve.22web.org/28080541914.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425768/normal_5fe6ec05b0a06.pdfIn PDF document text
    • https://cdn.sqhk.co/zidezofa/cUibhhc/benulewobi.pdfIn PDF document text
    • https://cdn.sqhk.co/benibavagoge/aMR9iig/72582808375.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://rukojipunuwupur.epizy.com/battlefield_2142_highly_compressed.pdfIn PDF document text
    • http://beruraxawiloga.rf.gd/nuramevodosowifaf.pdfIn PDF document text
    • http://woranuganavot.myartsonline.com/rejisuvetiwepopakizavipun.pdfIn PDF document text
    • http://sokutuwinal.epizy.com/58670345320.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c837.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC837 5028 bytes
SHA-256: 44f78c709cb007a013362030d94f28eb0b9b0d30758326381f6bef6926fdc697
font_01_sfnt_off0000d933.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD933 10148 bytes
SHA-256: 9941d57ff198f769b45bc611b613c07b14822887a0cc962e2548c98c5b8141d9
font_02_sfnt_off0000fbff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBFF 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e