Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d7554e466caf757…

MALICIOUS

PDF

67.2 KB Created: 2021-03-04 12:23:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 6cbd87090f9cc83b6eff17b4d614e39d SHA-1: 2922fc5812d2739f4caf23e70b990a331876b96f SHA-256: 6d7554e466caf7575e8be39f963bb58d57ee1704c72f74320fb1517e56c392af
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://kuzutuzo.ru/award?keyword=metodologia+de+la+investigacion+sampieri+5ta+edicion+pdf PDF link annotation
    • https://derivasip.weebly.com/uploads/1/3/1/4/131407068/mupapobujig.pdfIn PDF document text
    • https://wezusutuxalik.weebly.com/uploads/1/3/1/6/131637092/godimetun_sofutisiz.pdfIn PDF document text
    • https://gapudozesaneg.weebly.com/uploads/1/3/4/5/134525911/7df3147d.pdfIn PDF document text
    • https://pugulewex.weebly.com/uploads/1/3/1/4/131406013/seteg-wesudaluguzi-gukupifudobip-xigukutetebot.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380869/normal_5feec7550fe12.pdfIn PDF document text
    • https://govabegos.weebly.com/uploads/1/3/4/0/134018252/6807942.pdfIn PDF document text
    • http://kerutugizuxig.mygamesonline.org/tone_it_up_protein_shakes_target.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366956/normal_603d18b496faa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415944/normal_6036b29500923.pdfIn PDF document text
    • https://xezolemi.weebly.com/uploads/1/3/5/3/135324657/damapaxut.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450506/normal_5fec74508ed8c.pdfIn PDF document text
    • http://kenugizi.getenjoyment.net/predator_generator_4000_parts.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416934/normal_600270ea08561.pdfIn PDF document text
    • http://bexowobiminefi.mywebcommunity.org/adding_fractions_with_unlike_denominators_activities.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393635/normal_5fd1f001dac51.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000c4f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4F1 5664 bytes
SHA-256: 9ebd207d6bb9faf801effaa9e8db3c26ad332d811abd5d50217656950c5691e0
font_01_sfnt_off0000d844.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD844 11504 bytes
SHA-256: 6bfced72ce32d14a60e5ac77ba687d6b4f233ed0835da0d96572ba0571961c9c

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