Malicious PDF — malware analysis report

Static analysis result for SHA-256 13c027bbe310b362…

MALICIOUS

PDF

77.9 KB Created: 2021-03-01 00:41:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 8d3e073ebac9eddfef7f03c75ca16597 SHA-1: 1e844d6284e73c243c61cb2b59e87a46ab6d4258 SHA-256: 13c027bbe310b362c1c53741ea71276b9f9bf87a7e6d98ad7383cffe23727292
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://kuzutuzo.ru/wb?keyword=how%20to%20get%20a%20refund%20at%20gamestop PDF link annotation
    • http://nashremont.site/88412646695qwuhr.pdfIn PDF document text
    • http://terugate.mypressonline.com/84262572430.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450240/normal_5fd3afbe90660.pdfIn PDF document text
    • https://cdn.sqhk.co/dopuwene/iaiajep/80367013749.pdfIn PDF document text
    • https://cdn.sqhk.co/linidivez/ha31ibT/wifi_password_proxy.pdfIn PDF document text
    • http://digosige.mywebcommunity.org/96119424731.pdfIn PDF document text
    • http://qqkaxes.xyz/vowikevepuu4g9l.pdfIn PDF document text
    • http://pelistens.xyz/icomania_level_8_answers9gx4s.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4505125/normal_602d77e025f67.pdfIn PDF document text
    • http://avtoshtorki.shop/nabixumizepow684r.pdfIn PDF document text
    • https://cdn.sqhk.co/luwokiseg/dBgc1jb/2071359890.pdfIn PDF document text
    • http://atelier-spb.com/identify_the_statements_below_which_summarize_what_cash_discounts_arefwcl9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gekolutewubel.myartsonline.com/m_audio_axiom_air_25_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/robumuduluwise/rpa_effort_estimation_template.pdfIn PDF document text
    • https://s3.amazonaws.com/babuxufarizuxur/tekusip.pdfIn PDF document text
    • https://s3.amazonaws.com/futamo/book_creator_android.pdfIn PDF document text
    • https://s3.amazonaws.com/gumegulaxi/new_chhath_puja_song_video.pdfIn PDF document text
    • http://zikoliduxa.atwebpages.com/warhammer_40k_audio_books_download_free.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_off0000efd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFD6 5380 bytes
SHA-256: eaf2c88804d3b87b05c0f6dc58914649daedf19023fc0fb47571f56f37ee1c85
font_01_sfnt_off00010229.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10229 12712 bytes
SHA-256: 3784b9a276c0faf6ba0db28d0d65cd22c2532d147015fc4d031d49081b5372e8