Malicious PDF — malware analysis report

Static analysis result for SHA-256 913bd4688eb71b11…

MALICIOUS

PDF

65.2 KB Created: 2021-02-20 20:10:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 802f0f02c4d59c8d82925e734d0c2d5c SHA-1: e7a6c898cead9a13ac450cd8cdbf6aa95aa6730c SHA-256: 913bd4688eb71b113d56cbcfdd86a80ead30e2de6e1545016ec1524eed0dc1ba
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://baarspo.ru/wix?keyword=2000+chevrolet+s10+owners+manual PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4471484/normal_5ffa22d677939.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386829/normal_60296a78807c8.pdfIn PDF document text
    • https://cdn.sqhk.co/zidenesek/9iajfWh/tumebani.pdfIn PDF document text
    • http://fortuneo.biz/thooliyile_aada_vantha_song_downloadqjq33.pdfIn PDF document text
    • http://interbankdigital.com/advantages_of_social_media_on_academic_performancefy8xx.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454167/normal_5fcc020945503.pdfIn PDF document text
    • https://cdn.sqhk.co/wexufenu/gjgWc8L/lovecraft_country_episode_3_emmett_till.pdfIn PDF document text
    • http://converstarget.ru/sheetz_carrolltown_pennsylvania4m31y.pdfIn PDF document text
    • https://cdn.sqhk.co/veletafi/gigSGST/knife_sharpening_stone_melbourne.pdfIn PDF document text
    • https://cdn.sqhk.co/joxomawezu/wxjhgsZ/classlink_login_fulton_county.pdfIn PDF document text
    • https://cdn.sqhk.co/rabataxuvax/Q90yhcJ/bein_sports_live_tv_app_for_android.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384150/normal_5fd192d5d3b0d.pdfIn PDF document text
    • https://cdn.sqhk.co/jagapifa/1SZAAev/dragon_arcade_game_1980s.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/buponuwebi/kosoxatorepipuzapoted.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_off0000c4be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4BE 5420 bytes
SHA-256: 03cff2450044362e08a7730acea9c54d4d829913a04a7e9ac47c2310c5265052
font_01_sfnt_off0000d718.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD718 9748 bytes
SHA-256: b0138603c8d23e56c5ebbedb310f93e8ae9b0913bf9bf9fac6130970c6309330