Malicious PDF — malware analysis report

Static analysis result for SHA-256 d13e535e05bcd5a3…

MALICIOUS

PDF

71.6 KB Created: 2021-03-01 22:30:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: d68d9dd2b5d2f2b426af7b693fd5ffd0 SHA-1: 5c2c3cd5170d0a4988ac1ac278ef45e52c1b7654 SHA-256: d13e535e05bcd5a3b9371e9218775088bee7ac48c9d61dc7473e4e9956bdf6fc
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://nipisod.ru/wix?keyword=chapter+3+the+colonies+come+of+age+worksheet+answers PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4464878/normal_5fc6da66cd0fc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417992/normal_600368f66ccd5.pdfIn PDF document text
    • http://steelsho3.club/the_professional_chef_10th_edition_p2x9fg.pdfIn PDF document text
    • http://nageramuvepom.mywebcommunity.org/tripura_rahasya_hindi.pdfIn PDF document text
    • http://ibkreactiva2020.com/makeup_kit_cake_maker_glitter_baking_gameslisks.pdfIn PDF document text
    • http://rozujed.sportsontheweb.net/tumaletuj.pdfIn PDF document text
    • http://kemamibuke.mygamesonline.org/how_to_overcome_fear_anxiety_worrying_and_stress.pdfIn PDF document text
    • http://safijejog.mygamesonline.org/22131449199.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379841/normal_5fcce19b91b5c.pdfIn PDF document text
    • http://fitokaps.xyz/16489137389coyta.pdfIn PDF document text
    • http://testvvd.xyz/famous_english_short_storiesuiqq6.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/wizedumi/dell_latitude_e7470_repair_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/jujadodedaruxix/what_are_the_best_romance_books_on_wattpad.pdfIn PDF document text
    • https://s3.amazonaws.com/xixonu/chick_fil_a_potato_chips_nutrition.pdfIn PDF document text
    • https://s3.amazonaws.com/regovadeje/frankfurt_airport_flight_status_information.pdfIn PDF document text
    • https://s3.amazonaws.com/dapekufoxiraku/aha_hypertension_guidelines_2018_summary.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_off0000dbcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBCF 5656 bytes
SHA-256: 7f7c7e153ddf3d5720d485ad50180926e9d19c49b3a6c456106a565717e4c734
font_01_sfnt_off0000eef3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEF3 10000 bytes
SHA-256: 8468044ca85a8961ae79d1aaab4b722b0e28b862581fa7a7c3d9fc9f95cbb5b0