Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ece59a277ee2800…

MALICIOUS

PDF

68.3 KB Created: 2021-02-06 05:38:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: c7520e12555037544b8d99e1394f52ca SHA-1: e7e21d9e350c02f98290d0fab30516e8ea452d8d SHA-256: 7ece59a277ee280099815e051810dcd548fa770165d684ef333e457b997cc1af
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://leonvi.ru/wb?keyword=bhutanese%20new%20song PDF link annotation
    • https://zibekasosux.weebly.com/uploads/1/3/4/0/134040395/bofukanewujo.pdfIn PDF document text
    • https://radufogerexe.weebly.com/uploads/1/3/4/2/134265868/8983298.pdfIn PDF document text
    • http://floradoma.net/don_conrado_sol64jeh.pdfIn PDF document text
    • http://omerkatanalp.com/695899868589qbqs.pdfIn PDF document text
    • http://cleaner-inn.club/judovusomunekuzeketebijljhk.pdfIn PDF document text
    • http://digitalliteracyinstitute.com/luke_bryan_drink_a_beer_lyrics_videodoyhy.pdfIn PDF document text
    • http://instgrmmverifiedbadge.com/1939633938e9kj4.pdfIn PDF document text
    • https://tutitobogin.weebly.com/uploads/1/3/4/4/134485970/a1a8f0d587.pdfIn PDF document text
    • http://winclean-sale.shop/seguzora95dsu.pdfIn PDF document text
    • http://show-visitor.xyz/xevutuniturez8gso.pdfIn PDF document text
    • https://jinijazi.weebly.com/uploads/1/3/4/6/134668286/dofaluzupixijeto.pdfIn PDF document text
    • https://biziliwedurukax.weebly.com/uploads/1/3/4/8/134889104/18a5ea7264c9f.pdfIn PDF document text
    • http://nanolenka.xyz/gabupirezuzexosaxvrke.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366407/normal_5ffbd141591af.pdfIn PDF document text
    • https://gagufivelorifig.weebly.com/uploads/1/3/4/5/134596616/lalerizi-jikovefiluz-fixigux-darerorewum.pdfIn PDF document text
    • https://peniwifagupe.weebly.com/uploads/1/3/0/7/130738894/4256842.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xadiromawa.epizy.com/bilingual_books_english_russian.pdfIn PDF document text
    • http://rexelipenaporux.rf.gd/55493889389.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_off0000cd57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD57 4960 bytes
SHA-256: 639edbe7986dd4f2005d549f53d6ad9433b04f464306b6f5c1b7a73a87b9d204
font_01_sfnt_off0000de4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE4D 11064 bytes
SHA-256: a8f50b167f8aa58da834be1f17d5ab888309a21545fa6fc766956a5fda50837f