Malicious PDF — malware analysis report

Static analysis result for SHA-256 38d43a7700d29536…

MALICIOUS

PDF

79.3 KB Created: 2021-02-07 00:28:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 1ca1d7cdb1ab1898f01e01a24151c9f8 SHA-1: 89bf6d5c2975dd2ed99585f52397d73ec2f231ae SHA-256: 38d43a7700d29536f1b10b365511c11b5bbe8a26f501cf097f6dfa37e6d987e3
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://maypoin.ru/wb?keyword=holland%20tunnel%20accident%20report PDF link annotation
    • http://daating19.site/majima_hiding_in_plain_sightxlc3e.pdfIn PDF document text
    • https://cdn.sqhk.co/dutebosatu/FifjjZ2/kedirudifumubinubisaxu.pdfIn PDF document text
    • http://artistichomesolutions.com/command_and_conquer_ultimate_collection_megaa1jbo.pdfIn PDF document text
    • http://busurman.space/poxumadapijusazuwefijukog19wav.pdfIn PDF document text
    • http://tehnotop.site/66114501275laieo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474446/normal_6005dc4330ba0.pdfIn PDF document text
    • http://frontend-developer-azaynullin.site/orchestral_manoeuvres_in_the_dark_discographyq4cp9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426828/normal_601f14e1bd6cf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496592/normal_5ffe55ffce355.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/jewizopukuni/free_blogger_template_with_slider.pdfIn PDF document text
    • https://s3.amazonaws.com/damerirazib/gaxirixenawopemagibonuma.pdfIn PDF document text
    • https://s3.amazonaws.com/vidadaviwal/tejuzefimikazefowed.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxulikiwab/masugowu.pdfIn PDF document text
    • https://s3.amazonaws.com/padosumifubobo/dough_sheeter_for_sale.pdfIn PDF document text
    • https://s3.amazonaws.com/potamotaz/weather_report_in_delhi_now.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_off0000f71c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF71C 4852 bytes
SHA-256: 769615d8208ede4b1e616adc72abd0f05e17284a69a0758eea6daf9221d33a48
font_01_sfnt_off000107a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107A5 12324 bytes
SHA-256: 4d882e4b708f9076c5f8fe6757582eaa978d188aa0f0409d5cc328f2583b4986