Malicious PDF — malware analysis report

Static analysis result for SHA-256 6dca3a846fdb690c…

MALICIOUS

PDF

70.5 KB Created: 2021-03-13 15:22:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 0be07cfbb6e28f5d11f324224bcbbd4d SHA-1: 1e2e581fe2a5b446674c534d92cfbab90a7caf75 SHA-256: 6dca3a846fdb690cb67f3f2b58822f333d80cd3e0d46c98ea337029274417c0c
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://jottigo.ru/award?keyword=ashrae+62.+1+pdf+2020 PDF link annotation
    • http://hookup753.fun/jujikorenezubuatu.pdfIn PDF document text
    • http://bugilinupapud.mygamesonline.org/66319160340.pdfIn PDF document text
    • https://sejelenowoloza.weebly.com/uploads/1/3/4/5/134518320/josiwezunovabo_bamoxisexazulif_muwuxupapusevo.pdfIn PDF document text
    • https://tetoxoji.weebly.com/uploads/1/3/0/9/130969306/807909.pdfIn PDF document text
    • http://nipizakevenuvis.scienceontheweb.net/causative_verbs_exercises.pdfIn PDF document text
    • https://nibowivuxewanu.weebly.com/uploads/1/3/1/3/131379040/1965207.pdfIn PDF document text
    • http://xemokajoled.medianewsonline.com/32609119022.pdfIn PDF document text
    • https://berisojelo.weebly.com/uploads/1/3/0/8/130874511/01049b.pdfIn PDF document text
    • https://lulofaki.weebly.com/uploads/1/3/1/4/131453598/00bbe3052222.pdfIn PDF document text
    • https://gakafapokizi.weebly.com/uploads/1/3/5/3/135319358/xekubanizaz-jodasabiloduluw-kesezudu-gaxukatimewina.pdfIn PDF document text
    • http://vehicleinsusa.com/lekunipakixodem5j6.pdfIn PDF document text
    • https://zerasogamonan.weebly.com/uploads/1/3/0/7/130775055/9af21025e.pdfIn PDF document text
    • http://lebepufu.mypressonline.com/what_are_the_rules_for_dating_a_minor.pdfIn PDF document text
    • http://bcipreactivaperu.com/towenurinugutiluguo6wd.pdfIn PDF document text
    • http://naturalgood.space/unit_circle_trig_worksheetlgdzo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://911f1565-2faa-4874-b261-330d521e7362.filesusr.com/ugd/f46427_c0e4af10cd8b4d119983d21786283f4f.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/26bb5d40-3716-465a-a476-a67d284b7bf5/rujajogubeber.pdfIn PDF document text
    • https://b5f169ef-6bcf-4d19-a24b-32bdc9dd7a5f.filesusr.com/ugd/2e79a6_bdeb1e1f84c448d1aa216f9972988178.pdf?index=trueIn PDF document text
    • https://b40f07b9-a98f-42b6-a6e2-5dc2c82ebb0e.filesusr.com/ugd/e949ea_7d6b6cd7817e4197a39e324e20adceaa.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/698591c9-0f9d-4aa5-8908-bf0a88397cee/samsung_note_3_neo_launch_price.pdfIn PDF document text
    • http://dezobod.onlinewebshop.net/zesaximefifuzoze.pdfIn PDF document text
    • https://108bb973-5399-4bf7-a70e-a18780752cac.filesusr.com/ugd/760a88_00f3c313193c4c0cbb5f91596827d293.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/61428cfb-5152-4ea1-b0a1-636fea8de7e3/84367627391.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_off0000d498.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD498 5600 bytes
SHA-256: 7cd58e5d6c4cc19d9e65de6369ba7ee2dc01ef5a8d429c27a532ad697dd9db1c
font_01_sfnt_off0000e7aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7AA 10932 bytes
SHA-256: 16adaebe1fcbcc3bedde833fe9be9c8999c69f8470b7b74d623ba3122ae99817

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