Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c0f9cf74fc1d43d…

MALICIOUS

PDF

70.0 KB Created: 2021-01-31 07:19:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: ab985b748cdbfe509e272f9a3a35de53 SHA-1: 40642967294307f6bb4c0f5c9ecec4e127a6a8af SHA-256: 0c0f9cf74fc1d43dd40c6f33b41de3168062baf39a58bea90cc43c91ce1c7093
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://druttle.ru/123?utm_term=sweet+valley+high+%25232+pdf PDF link annotation
    • http://bajuzupur.22web.org/managing_land_contamination_planning_guidelines_nsw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464521/normal_6005b0aa947b9.pdfIn PDF document text
    • https://cdn.sqhk.co/supekolev/egehajh/sunca_rechargeable_fan_bd_price.pdfIn PDF document text
    • https://cdn.sqhk.co/getabemuto/hhByghU/that_s_life_frank_sinatra_lyrics_traducida.pdfIn PDF document text
    • https://cdn.sqhk.co/letinumi/an3iqjb/73709343789.pdfIn PDF document text
    • https://cdn.sqhk.co/bipadifudame/ijhrdgj/gosupanibetuzofarinav.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480736/normal_60026564db2b4.pdfIn PDF document text
    • http://xenuven.22web.org/garment_project_report.pdfIn PDF document text
    • https://cdn.sqhk.co/fujonexa/jbggW8U/reralokeweredatugopefitud.pdfIn PDF document text
    • https://cdn.sqhk.co/kewusikata/siigcje/zombieland_double_tapper_rules.pdfIn PDF document text
    • http://papotupeti.iblogger.org/fifoner.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427313/normal_5ffeccfa6c13f.pdfIn PDF document text
    • https://cdn.sqhk.co/livoluxuwad/hjaigha/lewerezonizajapixaxizuj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bomemab.epizy.com/double_bed_sheet_set.pdfIn PDF document text
    • http://wepatimaleb.epizy.com/desoto_county_arrest_reports.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_off0000d3e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3E7 5028 bytes
SHA-256: 7e4457a1d889be2b3ae3553a6c050959fb3f2f3d36afa392cccb97621a8c5fad
font_01_sfnt_off0000e521.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE521 11308 bytes
SHA-256: 6d6a6f41dd741f0ebd851794ebc34c2b838380e1ae22e4dad5eb087a2744263f