Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b0411dc9540f301…

MALICIOUS

PDF

70.7 KB Created: 2021-02-04 16:09:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 405cb487d4298f5f06586b3ab52d6c83 SHA-1: 42ee4f8e1c71f4d0975c28e8ea37d8cba86d90d9 SHA-256: 0b0411dc9540f30129bb3d23b86afabf867fdc455ed407b801764105b27758c4
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://maypoin.ru/wb?keyword=jurassic%20world%20theme%20song%20sheet%20music PDF link annotation
    • https://xujupowosorome.weebly.com/uploads/1/3/4/4/134485259/jugeliworimexus.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369920/normal_5fce5b2b6bcb4.pdfIn PDF document text
    • https://guxesawaxogego.weebly.com/uploads/1/3/4/3/134314991/4592178.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443362/normal_5fd6e1581298b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388420/normal_5ff1954dc8181.pdfIn PDF document text
    • http://wrinklestiltskin.com/demostrar_identidades_trigonometricas_ejercicios_resueltos923i7.pdfIn PDF document text
    • https://cdn.sqhk.co/tononapiwaso/bVmhdR0/87364781373.pdfIn PDF document text
    • http://krokoboko6.xyz/kinuzexebx1yuh.pdfIn PDF document text
    • https://ratopavitakam.weebly.com/uploads/1/3/4/4/134460251/visox-ganar-muretavib-taxugij.pdfIn PDF document text
    • https://puzomukasudugun.weebly.com/uploads/1/3/4/8/134865935/81c0d38e7.pdfIn PDF document text
    • https://dugufenejoropez.weebly.com/uploads/1/3/0/7/130775504/cd444298689d7e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379474/normal_6014bd14033c3.pdfIn PDF document text
    • https://cdn.sqhk.co/fabunavaxa/eLthdji/49127907147.pdfIn PDF document text
    • https://cdn.sqhk.co/mepetiruzi/jgHhjuz/zed_costume_for_adults.pdfIn PDF document text
    • https://cdn.sqhk.co/talurelope/fPhaFjf/kumoropaditaxisakidimipur.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_off0000d606.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD606 5436 bytes
SHA-256: 22e85cb4399f37e9c704768a711bb555f5d6d8c72ed97758bc259aacfa4a2cdc
font_01_sfnt_off0000e85f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE85F 11112 bytes
SHA-256: 016e623b2bae45989bdd4ba24960fdd4640020298f5e68ac69cf07334ebe2008