Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d30ac425eec4828…

MALICIOUS

PDF

67.4 KB Created: 2021-02-11 14:54:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: e301878bc2d486ceb6c89241713c0738 SHA-1: 2e51a4c3c48aa4fff25384dcac9f2919677094f8 SHA-256: 4d30ac425eec482876736ec81519bdf3ab8361013dec9bad62e362fd5438c37f
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://druttle.ru/wix?keyword=hotels+near+chalet+on+the+hudson PDF link annotation
    • https://lonexuganaj.weebly.com/uploads/1/3/1/8/131856054/jasedokuvana-mabewa-surapavabej.pdfIn PDF document text
    • http://matteset-spon.space/agricultural_marketing_channelsn1xh0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426812/normal_5fe8f9589c6ad.pdfIn PDF document text
    • http://cleaner-inn.club/visual_studio_2017_platform_toolset_v141_xp3crmo.pdfIn PDF document text
    • https://mobinefoju.weebly.com/uploads/1/3/1/3/131398425/worofawefaku.pdfIn PDF document text
    • https://jezuvafu.weebly.com/uploads/1/3/5/3/135348480/nimuxitipabemax.pdfIn PDF document text
    • https://cdn.sqhk.co/zogobadakedu/7hgMhaL/norufeviv.pdfIn PDF document text
    • https://cdn.sqhk.co/tezofugowura/i9ggidx/frases_de_amor_propio_para_fotos_tumblr.pdfIn PDF document text
    • https://xavapijiwo.weebly.com/uploads/1/3/3/9/133997403/17fa8d6.pdfIn PDF document text
    • https://tutupofu.weebly.com/uploads/1/3/0/9/130968911/4874f5.pdfIn PDF document text
    • https://cdn.sqhk.co/giganopof/thhigig/ringtone_song_2020_dj.pdfIn PDF document text
    • http://reassurez-moi-fr.info/29885486212p42kh.pdfIn PDF document text
    • https://turoliletipusu.weebly.com/uploads/1/3/5/9/135969349/bewat_fapebuzojosor_gituvav_moteropezuponuj.pdfIn PDF document text
    • https://novebeze.weebly.com/uploads/1/3/3/9/133997241/kukor.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382771/normal_5fe9227866b52.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tidegofavinugaw.epizy.com/88593919723.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_off0000ccef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCEF 4988 bytes
SHA-256: abedf3499eacac946cd18399466c9c093640878ecbfa17ce8509ce1fba8a8946
font_01_sfnt_off0000ddd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDD3 10168 bytes
SHA-256: 9c355cf35873e4782b8a147084f176ab9577f8c87b52a5c8f29554b7c5184cdd