Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c397824e268da63…

MALICIOUS

PDF

76.0 KB Created: 2021-02-07 23:37:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: c40ea28a7ad6040d3e41d35298c5bdb7 SHA-1: a5a8861a68ad4879b52439868516fb91978e991d SHA-256: 6c397824e268da635d45902199c52edab2183b8d0eba20e45ce6478737c0bf72
244 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
  • 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 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.
  • 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/aws?utm_term=discipleship+bible+study+lessons+pdf In PDF document text
    • http://koteyarn.moscow/kotlin_programming_compiler_apk4rw5m.pdfIn PDF document text
    • https://cdn.sqhk.co/pumopijaku/jeKidhe/photo_on_birthday_cake_apk_download.pdfIn PDF document text
    • https://motanaweda.weebly.com/uploads/1/3/4/3/134316912/daff12ee44320.pdfIn PDF document text
    • https://cdn.sqhk.co/kufedefivuvu/GThhtjg/gozavot.pdfIn PDF document text
    • http://organicnu.info/kaseniwavilitamv0pcf.pdfIn PDF document text
    • https://difanewoxapazu.weebly.com/uploads/1/3/5/3/135321324/4dd3702330d1.pdfIn PDF document text
    • https://pebabole.weebly.com/uploads/1/3/4/6/134698512/8643451.pdfIn PDF document text
    • https://cdn.sqhk.co/xaxovowupofa/VsurJHA/gadivowivo.pdfIn PDF document text
    • https://kukevukoleguko.weebly.com/uploads/1/3/4/2/134265740/1412847.pdfIn PDF document text
    • https://cdn.sqhk.co/gesokusa/hijrjjl/poultry_seasoning_turkey_breast.pdfIn PDF document text
    • https://nekatiru.weebly.com/uploads/1/3/2/6/132695473/11d1bcc42bf.pdfIn PDF document text
    • https://jajaleregonu.weebly.com/uploads/1/3/4/2/134235513/1fc5fb7dd.pdfIn PDF document text
    • https://sodikisug.weebly.com/uploads/1/3/1/4/131437766/xemusuno.pdfIn PDF document text
    • https://cdn.sqhk.co/libidexa/jiGJshd/craigslist_kearny_nj_pets.pdfIn PDF document text
    • https://cdn.sqhk.co/nupozifulija/cE2RMtc/basketball_legends_unblocked_6969_at_school.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/padadutiseni/xilulumoxidomalel.pdfIn PDF document text
    • https://s3.amazonaws.com/zufojadibi/muxoxulag.pdfIn PDF document text
    • https://s3.amazonaws.com/mubefula/popobozu.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE64 5176 bytes
SHA-256: 7c6f3e19756affc579e8a2dc183ba86cd76903f02bb1f02ad89f24f3feababf1
font_01_sfnt_off0001000c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1000C 10220 bytes
SHA-256: 7a2a673d9abfc74465400b269b31495195616ea5adde166ff0939af1b43eff3f

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