Malicious PDF — malware analysis report

Static analysis result for SHA-256 82cb48568fe0534c…

MALICIOUS

PDF

73.0 KB Created: 2021-02-20 19:18:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: f799f0023da856aa121ae779c397633c SHA-1: 758ac87d356e833acca2a3ac33c2b84f1ed97771 SHA-256: 82cb48568fe0534cbd0353377cebf20f0f95a41655f62f46f68a8a855c68d7a2
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://baarspo.ru/wb?keyword=quality%20and%20safety%20in%20healthcare%20australia PDF link annotation
    • https://cdn.sqhk.co/xovikojux/i9wifha/la_liste_de_schindler_le_livre.pdfIn PDF document text
    • https://vinovubetiloj.weebly.com/uploads/1/3/4/6/134679092/zujugowi-lesurobarudonex-pubafopojonelev.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463272/normal_6016cf9a23418.pdfIn PDF document text
    • https://rubopawine.weebly.com/uploads/1/3/1/0/131070645/wumibodetogiwo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464878/normal_602a2c2aa751a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404738/normal_5fec91bdc13c6.pdfIn PDF document text
    • https://nefarixuk.weebly.com/uploads/1/3/1/4/131407944/lamikilamesepolubag.pdfIn PDF document text
    • https://cdn.sqhk.co/wemitupu/4ie53w6/jasalelaveted.pdfIn PDF document text
    • https://bupiwuzisulim.weebly.com/uploads/1/3/0/8/130874125/kovape-solovibepixigi-sipurajutaxa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449616/normal_5feebf1bc4ed3.pdfIn PDF document text
    • https://burekanokem.weebly.com/uploads/1/3/1/0/131069897/9632523.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460072/normal_5fc6f2d88f41b.pdfIn PDF document text
    • https://megigoxifiwovom.weebly.com/uploads/1/3/0/7/130740625/9e30962.pdfIn PDF document text
    • https://sokirokesavosa.weebly.com/uploads/1/3/4/9/134901907/4d9e5dcfa11807.pdfIn PDF document text
    • https://natapuwofase.weebly.com/uploads/1/3/1/8/131857101/davapabusawagazudi.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_off0000e293.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE293 5272 bytes
SHA-256: c450adfb260e0555dcac49d750d7f8d1b72eeba7a867a1a0cf5652e8a88ba099
font_01_sfnt_off0000f483.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF483 10184 bytes
SHA-256: 6644a4310f2d9165c2218d46f606c1311fea1709e01d5a78dd1228ac79261712

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