Malicious PDF — malware analysis report

Static analysis result for SHA-256 60f595a3056df2af…

MALICIOUS

PDF

65.8 KB Created: 2021-02-13 12:11:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 33683aeb07299fb7d5f3996fa4cb31c4 SHA-1: 1d78276bff27bef6fa265d0aff2c53a8314c9e38 SHA-256: 60f595a3056df2af897af70f3e0b45f6526cbde87a5476437fe50dd405ffb66e
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/aws?utm_term=adverbs+worksheet+for+year+6 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4370278/normal_5fc8e84dd58e4.pdfIn PDF document text
    • https://cdn.sqhk.co/pedidagow/Ohep5ih/zaziputofujurelelivi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450727/normal_6011022775c32.pdfIn PDF document text
    • https://radifepibonavu.weebly.com/uploads/1/3/2/7/132712096/2ef820b8c5a9075.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384831/normal_5fe3e0a28e3d4.pdfIn PDF document text
    • https://xidelesa.weebly.com/uploads/1/3/4/4/134498911/mewepa.pdfIn PDF document text
    • https://dazenesulamese.weebly.com/uploads/1/3/1/1/131164173/5dff2.pdfIn PDF document text
    • https://wiruxunuv.weebly.com/uploads/1/3/5/3/135324042/057f2ff2287bde7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486344/normal_601dd360b754f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369164/normal_5fc923aaf1abb.pdfIn PDF document text
    • https://zigajimimokok.weebly.com/uploads/1/3/1/3/131383588/6820194.pdfIn PDF document text
    • https://cdn.sqhk.co/midubevine/PUjdtZU/spongebob_sponge_on_the_run_streaming_canada.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/nisiwanolom/80054352330.pdfIn PDF document text
    • https://s3.amazonaws.com/bifadiwuwileji/67257165364.pdfIn PDF document text
    • https://s3.amazonaws.com/likadojivivofu/jedupujoweduwewaxopas.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_off0000c3d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3D1 5564 bytes
SHA-256: 732f9b424bce7b739e227ba6b37b68f6714b494481b84af5a8bcf96b85eb79a1
font_01_sfnt_off0000d6d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6D4 10504 bytes
SHA-256: eb6dfb878d8c842593ec073155abdf95a7541417ab2e725660d59710eed0191b