Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bc18bf64c0dc7a5…

MALICIOUS

PDF

81.5 KB Created: 2021-02-18 23:40:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: d785697305bd1b7cf65e42c49438f4a2 SHA-1: 2e994dab0c0810dd36a71fdc60d0ff5a5a68e5ef SHA-256: 7bc18bf64c0dc7a5c9f6d6ed7c1f808ac0ea3e671dcbc7f886339261c884bc76
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://seumenha.ru/wb?keyword=what%20is%20curriculum%20vitae%20pdf PDF link annotation
    • https://cdn.sqhk.co/sunalikefazo/ihijihc/79002064784.pdfIn PDF document text
    • https://zogumunatol.weebly.com/uploads/1/3/1/6/131636745/gaxutasimokoxevej.pdfIn PDF document text
    • https://cdn.sqhk.co/goberirud/PjdLgf0/tazubimanirudu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501027/normal_5fddcf9e52820.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370088/normal_6022c32782117.pdfIn PDF document text
    • https://fifimijo.weebly.com/uploads/1/3/4/7/134748793/tekosopovuzeji.pdfIn PDF document text
    • http://momentshop.website/acrylic_nail_designs_2019_shortupycs.pdfIn PDF document text
    • http://indonesia2health.online/92011613375wedgf.pdfIn PDF document text
    • http://wukosemat.22web.org/lugoridatare.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409814/normal_5febea8f1ae58.pdfIn PDF document text
    • https://cdn.sqhk.co/fagisuxupinu/jbTMhdU/tuparerari.pdfIn PDF document text
    • https://topudikuwem.weebly.com/uploads/1/3/4/0/134042537/ludozog.pdfIn PDF document text
    • https://cdn.sqhk.co/fixefalid/FMhckNJ/ducks_unlimited_banquet_arkansas.pdfIn PDF document text
    • http://weareanonymous.org/bluestacks_apk_dosyas_ykleme8jzdc.pdfIn PDF document text
    • https://rojanebe.weebly.com/uploads/1/3/1/6/131637229/5186911.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off000101c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101C8 5468 bytes
SHA-256: 8078368dc2be6a0d90e5efd9e4c8067fc6b4b3bec468c246d2eeb6cf9122d882
font_01_sfnt_off0001144b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1144B 10832 bytes
SHA-256: 70afae70b749bc4edfa02b1c86b5c837de57ea9deac66fe8cca308cd0667d5cf