Malicious PDF — malware analysis report

Static analysis result for SHA-256 24ea06f80a683597…

MALICIOUS

PDF

71.0 KB Created: 2020-11-19 08:15:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: e07608e3877273f9a9c1e1bed1c9433e SHA-1: 905f637a6c20639c6a1b35b8da8b650b8fed51dc SHA-256: 24ea06f80a68359712e04e8eb897ffa599c91397e48fc1d18650552b75f6ee1b
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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://trafficel.ru/123?utm_term=claim+evidence+reasoning+middle+school+science PDF link annotation
    • https://belafawejogawol.weebly.com/uploads/1/3/4/5/134583754/jakadaworulozazur.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385216/normal_5f97636ec869b.pdfIn PDF document text
    • https://misurabize.weebly.com/uploads/1/3/4/6/134666879/4934004.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424026/normal_5fa360c2a0c33.pdfIn PDF document text
    • https://dejolezeg.weebly.com/uploads/1/3/2/8/132815968/742509.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393893/normal_5f96eaead34f4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496597/normal_5fb5e308d5099.pdfIn PDF document text
    • https://gujodoludota.weebly.com/uploads/1/3/2/6/132681740/nakizaluse.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370530/normal_5f8a929f74607.pdfIn PDF document text
    • https://kirimanadawa.weebly.com/uploads/1/3/4/3/134383910/ed46622.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379236/normal_5f9534e8f3d5b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486201/normal_5fac484301166.pdfIn PDF document text
    • https://popilezofale.weebly.com/uploads/1/3/1/1/131164236/4309923.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/sefiwegegagu/balance_of_trade_india.pdfIn PDF document text
    • https://s3.amazonaws.com/donarepemi/liruravawodubapiviwobesom.pdfIn PDF document text
    • https://s3.amazonaws.com/sugosubexez/urdu_novel_alif_complete_download.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_off0000d849.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD849 5316 bytes
SHA-256: a1a4e6a2af9e8cdf52de9e337c4780cb28f10aebe4120524092ff35630ecce2e
font_01_sfnt_off0000ea34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA34 10804 bytes
SHA-256: b1585be8cefced1dd1d8b990cace7ff05eb18ed78fdc120d17554a15d199cbc9

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