Malicious PDF — malware analysis report

Static analysis result for SHA-256 232030aad565cea3…

MALICIOUS

PDF

72.5 KB Created: 2021-02-28 06:50:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 6790effef678ff99a2b04ebc31da8a05 SHA-1: afec6a3de1177d4c0360fe56c0bb571a178769da SHA-256: 232030aad565cea38daaf821dc04c58fe067f29bd4cfebadbf2dbd00437cefe7
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://zajinet.ru/award?keyword=mcp61pm-hm+motherboard+bios+update PDF link annotation
    • https://cdn.sqhk.co/foturozav/haikjgb/lexiledoxedejinemuxilizo.pdfIn PDF document text
    • https://cdn.sqhk.co/temisexezoda/jb2jjib/multicraft_commands_not_working.pdfIn PDF document text
    • http://zalofamanaw.22web.org/gafom.pdfIn PDF document text
    • http://tajoraf.22web.org/44721035583.pdfIn PDF document text
    • https://cdn.sqhk.co/negapevu/jdgdv2s/super_discount_liquor_dixie_inn.pdfIn PDF document text
    • https://vulemozebo.weebly.com/uploads/1/3/4/6/134693025/vegumeki.pdfIn PDF document text
    • https://cdn.sqhk.co/zidulibu/bifLdgf/dojegowa.pdfIn PDF document text
    • https://cdn.sqhk.co/sajatanugeg/guhfPha/auto_dealership_tycoon_game_download.pdfIn PDF document text
    • https://cdn.sqhk.co/wularumijif/icPyjap/56091081279.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zunedolu.rf.gd/65645164425.pdfIn PDF document text
    • http://vuxaputu.epizy.com/20275494970.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_off0000df52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF52 5664 bytes
SHA-256: 26a76e010e1f0b306692d732398fb1af659831be9f66a3c01897c8b68692c700
font_01_sfnt_off0000f280.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF280 10348 bytes
SHA-256: 4aa6bf243eebdab30fe2015cf097c31ba43fc8349a24f0d8174f7f74fc59906a