Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc914afbb267ae10…

MALICIOUS

PDF

68.8 KB Created: 2021-03-08 11:00:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: ebbcce3b003c1b808fb7fb56d7ff72a7 SHA-1: 44f00243d685fe4f451a3a47b914c28d25d0950f SHA-256: bc914afbb267ae10c17d02ab013eb58fcd474a3bd6e8e9b86c5cdc5aa2852907
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://druttle.ru/award?keyword=nelson+grade+12+biology+textbook+answers+pdf PDF link annotation
    • https://fazolusafiwef.weebly.com/uploads/1/3/4/5/134585025/bewaj.pdfIn PDF document text
    • https://gituwelogasof.weebly.com/uploads/1/3/2/8/132814340/eee6858d7620.pdfIn PDF document text
    • https://sabiwivilo.weebly.com/uploads/1/3/4/3/134316676/3260261.pdfIn PDF document text
    • http://pusewuvi.medianewsonline.com/74909462213.pdfIn PDF document text
    • http://nomokesus.sportsontheweb.net/billye_brim_authority_of_the_believer.pdfIn PDF document text
    • https://wufopuse.weebly.com/uploads/1/3/5/3/135300065/2003589.pdfIn PDF document text
    • https://jufavufopu.weebly.com/uploads/1/3/4/3/134340263/5419456.pdfIn PDF document text
    • https://latowinu.weebly.com/uploads/1/3/4/5/134508675/tetikos_bezorokila.pdfIn PDF document text
    • http://puveputado.sportsontheweb.net/14558269376.pdfIn PDF document text
    • https://xavabijikuz.weebly.com/uploads/1/3/1/6/131636819/d4040fe.pdfIn PDF document text
    • https://xaweregosakub.weebly.com/uploads/1/3/1/4/131407668/3006004.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nejimafalun.onlinewebshop.net/dituwogipul.pdfIn PDF document text
    • https://17a6c5a8-0587-4adf-8126-5b439e15a62f.filesusr.com/ugd/54bec1_50c7e97e7f3b473fbfaf82c92f6adcf1.pdf?index=trueIn PDF document text
    • https://5548a280-a194-4776-8019-0e256783c1fa.filesusr.com/ugd/f2c1dc_3273513851c84f738e6c33c981fb855b.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/493762c1-004b-45a2-b5d4-a33e1f55b5fe/kofugopati.pdfIn PDF document text
    • https://35479656-6a94-44d6-ac55-da507c14a2ae.filesusr.com/ugd/d68318_078f7aca9df14b249d17ddcd29ca57eb.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b26d1cf-26a5-4f1b-9199-a22bcc075fd0/nifilugofawibizerexuxaxuf.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_off0000cedf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEDF 5828 bytes
SHA-256: 773ac991ee715648d44451c910d74c9d6b2912afc9b5c2c5b385c3facb7ef1cb
font_01_sfnt_off0000e2ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2EA 10360 bytes
SHA-256: cd58c1ae9415f5fd1f8876e9cede0097c521dfbc4fdb04a1499985c4fb4ac3fd

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