Malicious PDF — malware analysis report

Static analysis result for SHA-256 07175626558bc153…

MALICIOUS

PDF

71.9 KB Created: 2021-02-25 03:11:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 6fcb0da88d82221051230cabd5ec7d2e SHA-1: adb577631b6e5a3a86312913f6d093bbb20c0d7e SHA-256: 07175626558bc153f1741c08d9a7405132c9cd50efb43aac1057cafc5e5de431
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous external links, many hosted on disposable domains, suggesting a link farm or phishing operation. The presence of the URL 'https://druttle.ru/wix?keyword=mega+miner+hacked+unblocked+66' in the document body indicates a lure to a potentially malicious site. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for distributing further malware or conducting phishing attacks.

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://druttle.ru/wix?keyword=mega+miner+hacked+unblocked+66 PDF link annotation
    • https://kotasixunepa.weebly.com/uploads/1/3/0/7/130776076/93ebec7.pdfIn PDF document text
    • https://lirejodeju.weebly.com/uploads/1/3/4/6/134628820/1063020.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387806/normal_5fda72c413dde.pdfIn PDF document text
    • http://bibuzikufaje.mygamesonline.org/fedigegesavuzeg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412377/normal_601559e031aae.pdfIn PDF document text
    • https://tasimaxexakopox.weebly.com/uploads/1/3/2/6/132681882/dovonifivuraraparap.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486975/normal_600731565cc39.pdfIn PDF document text
    • https://dexejajakoto.weebly.com/uploads/1/3/0/7/130739268/dijimakalezuko.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458388/normal_5fe010820b0c0.pdfIn PDF document text
    • http://sfr-espace.best/fovorafulexusuv0wqrv.pdfIn PDF document text
    • https://majizozu.weebly.com/uploads/1/3/4/5/134598595/novixalikazi-borobixow-vojov.pdfIn PDF document text
    • https://barutonujumajom.weebly.com/uploads/1/3/0/7/130739232/petajaxetad.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fuwawibu/font_awesome_version_4._7_free.pdfIn PDF document text
    • https://s3.amazonaws.com/lezerawe/rent_lease_form_printable.pdfIn PDF document text
    • https://s3.amazonaws.com/bitizopovopaso/ditovemowuzo.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_off0000dc49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC49 5536 bytes
SHA-256: 90657af54264c56400c87b992dd584a55bec1129a12511534bbe71a9056c5678
font_01_sfnt_off0000eeff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEFF 10416 bytes
SHA-256: 90b978c8ca9920ab090a8541106fbe23a8f7a6f274253b434d6fd9df90c70a8d

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