Malicious PDF — malware analysis report

Static analysis result for SHA-256 196f65ca616c55e4…

MALICIOUS

PDF

70.8 KB Created: 2021-01-30 14:43:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: eab890a221d99b573de54030ad23d5bd SHA-1: 415a50b89758defddb5eb152bb6f7d067c985ae5 SHA-256: 196f65ca616c55e4585170042196935baae60cfc381cd90c3ceb031c172f92dc
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/aws?utm_term=anemia+falciforme+explicacion+bioquimica PDF link annotation
    • https://jomefibid.weebly.com/uploads/1/3/4/5/134596324/tufewonavav.pdfIn PDF document text
    • https://lobavasato.weebly.com/uploads/1/3/1/4/131483685/koxale.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420034/normal_5fca5e63e0557.pdfIn PDF document text
    • https://cdn.sqhk.co/dubikewe/cE3gehe/xekuxizimokebegenefo.pdfIn PDF document text
    • https://sujanumijixedi.weebly.com/uploads/1/3/4/5/134501714/tamopifemibixik_mexoguda_terivoja_vuzirorad.pdfIn PDF document text
    • https://cdn.sqhk.co/kenipafitu/3ijjaqi/vujexa.pdfIn PDF document text
    • https://cdn.sqhk.co/laripikiwafo/M21hbje/guns_and_glory_heroes_premium_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/pevedapev/icegejj/jobogatoromazolifitoxa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408992/normal_6006b38a76a43.pdfIn PDF document text
    • https://nazasakodaz.weebly.com/uploads/1/3/4/6/134667833/5352521.pdfIn PDF document text
    • http://gerakaxow.22web.org/21797152857.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://luwusifijusu.rf.gd/nuxomumojuwepajazu.pdfIn PDF document text
    • http://xupezewusipoja.rf.gd/50710687983.pdfIn PDF document text
    • https://s3.amazonaws.com/debamijizozexo/marketing_calendar_excel_template_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/rakabexozu/mikofuwanidonudef.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_off0000d704.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD704 5308 bytes
SHA-256: 12ccd478c7085297ca1a46ad7ad2a5cabe6d42f4ba21171db6f065b03e28e4e9
font_01_sfnt_off0000e8fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8FE 11208 bytes
SHA-256: 61c3efec040a19361279747710e21e3d17bd848f0af98b39624c7e7ffe6817b5