Malicious PDF — malware analysis report

Static analysis result for SHA-256 efdf987e8065a3f8…

MALICIOUS

PDF

66.6 KB Created: 2021-02-23 04:24:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: e512ae890cade8c70908fe5f723c9b9f SHA-1: 200eab0ed8e27393ea0b5faf06aa686357b2da39 SHA-256: efdf987e8065a3f8d7c06e102477fb5495ad27ab4db0ecce65524fad7d12f262
206 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH
    A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
  • 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://bologen.ru/wix?keyword=three+rivers+church+savage+mn PDF link annotation
    • https://cdn.sqhk.co/rabataxuvax/bjyHQAt/26795995507.pdfIn PDF document text
    • http://dfahsdfgjsfg.online/sodeluwozinanotemevikv51j2.pdfIn PDF document text
    • http://idealica-italy.site/appdynamics_php_agentr8kca.pdfIn PDF document text
    • https://cdn.sqhk.co/vadezewe/ijjbtjf/ludo_king_mod_apk_latest_version.pdfIn PDF document text
    • https://zupelewelasilag.weebly.com/uploads/1/3/4/5/134594614/43d743431254c8.pdfIn PDF document text
    • https://cdn.sqhk.co/nagotumubo/t1Yhigj/scruffy_dog_cartoon_character.pdfIn PDF document text
    • https://pixamowogiru.weebly.com/uploads/1/3/4/5/134590731/tesujatajafutu.pdfIn PDF document text
    • https://tujulita.weebly.com/uploads/1/3/4/6/134687611/de578d9ffbaaa4c.pdfIn PDF document text
    • https://cdn.sqhk.co/jarixizotib/2hiC1Yk/introduction_to_business_management_10th_edition_notes.pdfIn PDF document text
    • http://yoga-fitness.space/ashton_irwin_2020_girlfriendoa3tv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468531/normal_601ad1e911ae8.pdfIn PDF document text
    • https://jezasozogederek.weebly.com/uploads/1/3/5/9/135960593/2405814.pdfIn PDF document text
    • https://cdn.sqhk.co/nezuxada/Fhi5ihB/64463485625.pdfIn PDF document text
    • https://cdn.sqhk.co/xuxinugad/WNijdYd/tudegabazuregor.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/jadudusujuje/50165677887.pdfIn PDF document text
    • https://s3.amazonaws.com/gekixadonuru/rojuwav.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bb9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB9E 4880 bytes
SHA-256: 514bb92d533a0e4dec807d98b89d04031a56fdfb0d33e5a09281468ec445e0c6
font_01_sfnt_off0000cc0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC0D 10244 bytes
SHA-256: b4a3b00b1169167ec3130e003612bf79a8f4f7428336eabd81f5897edae822c0
font_02_sfnt_off0000ef28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF28 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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