Malicious PDF — malware analysis report

Static analysis result for SHA-256 d387a6ac686b3d15…

MALICIOUS

PDF

70.1 KB Created: 2021-03-04 04:14:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: be4bb9c1c2819663fd76811b0ecaef4f SHA-1: ac34db301225966c5f87ef80cc7391becd69c0b5 SHA-256: d387a6ac686b3d15e43fa9371c2bacefa9daf0aa30e746a707c05295a3f3f6d5
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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=how+do+i+reset+my+totaline+thermostat PDF link annotation
    • http://cartest.pro/663959057452ppyd.pdfIn PDF document text
    • http://vijoxufomodazug.22web.org/ashburnham_primary_school_uniform.pdfIn PDF document text
    • http://brumbum3.xyz/complaints_procedure_template_nhsimcpt.pdfIn PDF document text
    • https://tinutenuku.weebly.com/uploads/1/3/4/6/134664278/zulojolanikelug.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392191/normal_5fe98d4cd5901.pdfIn PDF document text
    • http://goodnaturak.space/download_streetball_hero_apkdvbzr.pdfIn PDF document text
    • http://walletelectrum.buzz/65034598010er0hj.pdfIn PDF document text
    • http://lajenasuwo.iblogger.org/bhajan_dj_song_2018.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418778/normal_5fdd670b3f0b1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418565/normal_6009d69214f00.pdfIn PDF document text
    • http://dusosax.66ghz.com/xixemoxizu.pdfIn PDF document text
    • http://mexicotop.xyz/jaretujizapegotovanerq7y7o.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xodupope.epizy.com/46135561923.pdfIn PDF document text
    • http://fububosuvakosal.epizy.com/46810199875.pdfIn PDF document text
    • http://zavinawotomuvef.epizy.com/sapamitunafitudanipog.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_off0000d687.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD687 5220 bytes
SHA-256: 4554db09ea7a5af5cf06438587b0b6756290c4868b569326b8650cf32fd801b1
font_01_sfnt_off0000e828.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE828 10360 bytes
SHA-256: 0b46c48f56ee4a2a04d9868db8068303aaa2bc994dd00528a2ee57aec37bf23e