Malicious PDF — malware analysis report

Static analysis result for SHA-256 444afd647aa4477f…

MALICIOUS

PDF

77.0 KB Created: 2021-03-01 15:04:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: ead6d767da480872bb63bcfce9112d6f SHA-1: 159725c5aa2667af4487a9b4a9048f6f7faf64e6 SHA-256: 444afd647aa4477f0f648f2ad9593d7877dc94157dcab8393edb58301fa5e9c3
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://nipisod.ru/wix?keyword=digimon+world+championship+evolution+guide PDF link annotation
    • https://cdn.sqhk.co/butuxolevu/ha004ji/noticias_telemundo_47_fin_de_semana.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489725/normal_5fe1ccfb20ef7.pdfIn PDF document text
    • https://vomenipof.weebly.com/uploads/1/3/4/5/134585177/metirazipakok-kotiwibevazu-kugitasimalizi.pdfIn PDF document text
    • https://vavetupabon.weebly.com/uploads/1/3/3/9/133999816/fidefo.pdfIn PDF document text
    • https://tudexabi.weebly.com/uploads/1/3/4/7/134770635/vabusulisedibuzived.pdfIn PDF document text
    • https://cdn.sqhk.co/zebimapajod/g3ggphf/wix_logo_maker_login.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412378/normal_5fcf4bd894ebf.pdfIn PDF document text
    • https://pavofadibap.weebly.com/uploads/1/3/4/3/134370944/2034924.pdfIn PDF document text
    • https://cdn.sqhk.co/pedidagow/phihhge/stickman_dismounting_game.pdfIn PDF document text
    • https://wexarasi.weebly.com/uploads/1/3/4/3/134351888/498099.pdfIn PDF document text
    • https://cdn.sqhk.co/gigijuke/acUhi2k/foundations_early_learning_center_tuition.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370064/normal_601612345ae47.pdfIn PDF document text
    • https://kowedeta.weebly.com/uploads/1/3/0/7/130775164/sonota_dabuku_potode.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476596/normal_5fcdf45a2e014.pdfIn PDF document text
    • https://burufazifefep.weebly.com/uploads/1/3/4/5/134584298/rofozonikexiroja.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tetofamuxulil/angry_birds_transformers_hack.pdfIn PDF document text
    • https://s3.amazonaws.com/tomamujuf/ruzevalipewuniwabo.pdfIn PDF document text
    • https://s3.amazonaws.com/mubemutolewe/formal_dinner_invitation_template_word.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_off0000ecc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECC1 5640 bytes
SHA-256: 5aaac74d06e99730baa35fb0920621425f359ae47ad261541ca34ff1b05f04fc
font_01_sfnt_off0000ffdb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFDB 10964 bytes
SHA-256: 43005aedefd06a1cb672fcccd611f393be3d53d7edf8fc44c08d97d33f097f4d