Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ddb2f3134f9894d…

MALICIOUS

PDF

65.9 KB Created: 2021-01-26 21:40:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 5aa6e083a91090884ac044486f095f11 SHA-1: 3ef6c9d48f14ca63690106654bb1d6519f9be65c SHA-256: 8ddb2f3134f9894dedab6ed604c7f2a0aa75988ad6120b5d7b21da42ae5e36dc
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://leonvi.ru/123?utm_term=inspired+educators+inc+crossword+puzzle+answers PDF link annotation
    • https://cdn.sqhk.co/letijefa/gNWc6ij/jatasi.pdfIn PDF document text
    • https://nixalimug.weebly.com/uploads/1/3/2/6/132680811/5542984.pdfIn PDF document text
    • https://cdn.sqhk.co/gubogezemazo/OieiaJH/fortnite_prop_hunt_stray_kite_farms_code.pdfIn PDF document text
    • https://cdn.sqhk.co/kusewupudin/LlYiaie/medieval_madness_pinball_for_sale_australia.pdfIn PDF document text
    • https://cdn.sqhk.co/fugolamudara/2ijbglC/gogeberuwotoxoru.pdfIn PDF document text
    • http://topmassage.net/talking_droid_apk7lybb.pdfIn PDF document text
    • https://gupijevud.weebly.com/uploads/1/3/1/4/131407369/e1ec2.pdfIn PDF document text
    • https://rivixajonezil.weebly.com/uploads/1/3/1/4/131437445/24e9a56e5.pdfIn PDF document text
    • https://cdn.sqhk.co/delojiwuguj/Hzwvgjd/jowerujafolidaxuwori.pdfIn PDF document text
    • https://cdn.sqhk.co/gojikanemiju/jihYji8/redenabogizo.pdfIn PDF document text
    • https://cdn.sqhk.co/vumorumuvogi/jjbhixb/bavipawefejop.pdfIn PDF document text
    • https://cdn.sqhk.co/jakufomego/jcCjjB5/fupaxu.pdfIn PDF document text
    • https://cdn.sqhk.co/filemowa/jiXjegi/94246662860.pdfIn PDF document text
    • http://obschee.xyz/zitadananobbja6a.pdfIn PDF document text
    • http://idealicaitalia.website/haunted_tunnel_in_wheeling_wv0vyfm.pdfIn PDF document text
    • https://rominekajamarol.weebly.com/uploads/1/3/4/0/134040464/9050444.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410965/normal_5fe66393b888c.pdfIn PDF document text
    • https://cdn.sqhk.co/jawutuwek/jjYidgi/42191719352.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_off0000c6d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6D4 5144 bytes
SHA-256: 719a1e18bae3cdc610f5a54ac03ca75ef69699e63ea777eb8bc74066fd68c8ad
font_01_sfnt_off0000d87a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD87A 9908 bytes
SHA-256: d1b281b1b0def1b853b4c54909f104bd8fab02f85ef296a186f2a525fbb2f40c

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