Malicious PDF — malware analysis report

Static analysis result for SHA-256 14713a5fef360308…

MALICIOUS

PDF

66.8 KB Created: 2021-02-11 16:33:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 93c1cbf18cf62fa184407228ff8545d8 SHA-1: 1563da1d782b0324cfd06903c1dc2f265fe11da6 SHA-256: 14713a5fef3603089e4f8578c9752f012263c0655c256294132a5922bc303038
244 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wix?keyword=henry+ford+reading+comprehension+worksheet In PDF document text
    • http://tublitalia.space/tumblr_wallpaper_pastel_quotesbu63p.pdfIn PDF document text
    • https://wimekigulaz.weebly.com/uploads/1/3/1/1/131163744/jonabavi.pdfIn PDF document text
    • https://cdn.sqhk.co/kurafuso/Lhc4hfn/nhl_games_live_today.pdfIn PDF document text
    • http://sayfelengs.space/piano_tiles_game_downloadt9umm.pdfIn PDF document text
    • https://cdn.sqhk.co/vakanaju/ijfiahf/caponata_aubergine_recipe.pdfIn PDF document text
    • http://shishkin-seed.xyz/kusarozamoverj9l3k.pdfIn PDF document text
    • http://snegny.com/wunderbar_studios_theme_music5wz6h.pdfIn PDF document text
    • https://cdn.sqhk.co/ragojagef/hja3icB/93276757327.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452621/normal_5fd1e86c81e97.pdfIn PDF document text
    • https://laxuruvu.weebly.com/uploads/1/3/1/4/131482832/natinowojisuxiw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480423/normal_5ffb438d1ebf6.pdfIn PDF document text
    • https://cdn.sqhk.co/nifodotiriru/jhbiaib/paper_bunny_craft_ideas.pdfIn PDF document text
    • https://cdn.sqhk.co/wixexozesila/V9hjbee/newagebakorezixisusolen.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454167/normal_5fd179f5273e1.pdfIn PDF document text
    • https://vesanawe.weebly.com/uploads/1/3/4/6/134602832/893394.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/gotijejaj/animated_timeline_template_powerpoint.pdfIn PDF document text
    • https://s3.amazonaws.com/lizuseguwix/80614851040.pdfIn PDF document text
    • https://s3.amazonaws.com/zobuwubedak/bokikuwutatapobabede.pdfIn PDF document text
    • https://s3.amazonaws.com/kefefetafij/vuxokateluwijix.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b9ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB9EE 5544 bytes
SHA-256: 225e59067178fbce7a34212d75c0d284df7ff88b217f0aa822280d5b0f410043
font_01_sfnt_off0000ccb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCB4 10264 bytes
SHA-256: 28482ee543f0cc828df51b8f58abeb98af820bbd5d2702154d413ddb284ddd8d
font_02_sfnt_off0000efc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFC3 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3