Malicious PDF — malware analysis report

Static analysis result for SHA-256 c00bc5faa073a018…

MALICIOUS

PDF

76.7 KB Created: 2021-02-23 08:39:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 7cad0bdaa8b3400624409899e7444682 SHA-1: 3a6b2648e201e758f632307409e14334231761e5 SHA-256: c00bc5faa073a0184309ccf0c35ca8711cfdc3b40edc94f2d9c1409d7bf7219c
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://seumenha.ru/wb?keyword=is%20push%20pull%20legs%20better%20than%20bro%20split%20for%20mass PDF link annotation
    • https://taxupati.weebly.com/uploads/1/3/4/8/134891344/2608479.pdfIn PDF document text
    • https://fepaxumezo.weebly.com/uploads/1/3/4/3/134320712/gunisut.pdfIn PDF document text
    • https://weranatowo.weebly.com/uploads/1/3/1/4/131408071/refekujot.pdfIn PDF document text
    • https://notagudoda.weebly.com/uploads/1/3/0/7/130776089/sewojipaluwab_nevise.pdfIn PDF document text
    • https://talupujepanuzan.weebly.com/uploads/1/3/4/5/134595677/788194.pdfIn PDF document text
    • https://petavigavixate.weebly.com/uploads/1/3/4/4/134459614/f01513a71a23.pdfIn PDF document text
    • https://sefomaxezaniv.weebly.com/uploads/1/3/1/4/131483109/suneroguniviv.pdfIn PDF document text
    • https://sukaxivex.weebly.com/uploads/1/3/4/8/134895869/padube.pdfIn PDF document text
    • https://mixenabunagoxo.weebly.com/uploads/1/3/5/3/135320093/valive_fekowev.pdfIn PDF document text
    • http://rexapeduke.66ghz.com/1983152328.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/kulinisokakewi/14719563011.pdfIn PDF document text
    • http://maligufaribez.epizy.com/mexosaneb.pdfIn PDF document text
    • https://s3.amazonaws.com/vogubivajavofu/94526807338.pdfIn PDF document text
    • http://xamawesurasido.epizy.com/84960209399.pdfIn PDF document text
    • http://rorojuzuravix.epizy.com/neuritis_intercostal_tratamiento.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_off0000ef35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF35 5392 bytes
SHA-256: 7c134fb15b833eb385fc1736bdc896d9fdd20f2f764c19e72fb8a8f3843c10fb
font_01_sfnt_off00010162.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10162 10668 bytes
SHA-256: c69cad7c321ff74e65a32a261986572923a6405b8618e3991ccbf8c9ab4fe0a0