Malicious PDF — malware analysis report

Static analysis result for SHA-256 71d0e80f58aaf7a7…

MALICIOUS

PDF

81.9 KB Created: 2021-01-20 03:16:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: 0f088c5d4c9ecbcfe4405e7579975bcf SHA-1: 3dea6aa803abb716f0c8a09269dd21665226eb91 SHA-256: 71d0e80f58aaf7a76ae910730fe9420b21e63f7b950d83c559963fd9feaf0378
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://jacksth.ru/aws?utm_term=agroforestry+technologies+pdf PDF link annotation
    • https://site-1168218.mozfiles.com/files/1168218/charlotte_emergency_dental_charlotte_nc_28209.pdfIn PDF document text
    • https://cdn.sqhk.co/xiroxozalal/ifOiijj/zifukisoxudimemamad.pdfIn PDF document text
    • https://zadevadetolilug.weebly.com/uploads/1/3/5/3/135321342/878dcae15.pdfIn PDF document text
    • https://site-1241131.mozfiles.com/files/1241131/apprendre_l_anglais_francais.pdfIn PDF document text
    • https://cdn.sqhk.co/kesusevuzep/2vhhhj0/58592116720.pdfIn PDF document text
    • https://cdn.sqhk.co/jekuzedu/gjcjfG6/best_3_point_shooters_all_time_nba.pdfIn PDF document text
    • https://site-1261523.mozfiles.com/files/1261523/definicion_de_materia_organica.pdfIn PDF document text
    • https://site-1166704.mozfiles.com/files/1166704/nejetexatakemoxowuzob.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/dojonuta/35933828452.pdfIn PDF document text
    • https://s3.amazonaws.com/jubiferekaka/8287332261.pdfIn PDF document text
    • https://s3.amazonaws.com/nupotukig/cat_paw_print_vector_free.pdfIn PDF document text
    • https://s3.amazonaws.com/pizivurapab/causes_of_obesity_essay.pdfIn PDF document text
    • https://s3.amazonaws.com/nakevoja/bezuneselokif.pdfIn PDF document text
    • https://s3.amazonaws.com/vidadaviwal/rizivitop.pdfIn PDF document text
    • https://s3.amazonaws.com/gaxuremewuger/comparative_anatomy_of_vertebrates_heart.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_off00010300.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10300 5300 bytes
SHA-256: 8601056a862a123cd11b2d6aaab215dd171daa0a078f85b51ca97743df29453a
font_01_sfnt_off00011515.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11515 11088 bytes
SHA-256: eda0c5fb7310347967bc3da46426585dc36e372cdf5e9a583b2313afb60c4b8f