Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfdede8fe8c38ec8…

MALICIOUS

PDF

75.3 KB Created: 2021-02-11 08:42:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: c09a5ccc32d63f839381d281360e27db SHA-1: 1c050fb8ba6c87d6f5c446fc281924f420c29bf5 SHA-256: cfdede8fe8c38ec8c6f446d78d9d59df839ceef91260ac857d1e5c81d733732d
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://druttle.ru/square?utm_term=adobe+after+effects+full+tutorial+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369648/normal_601b30c4c4b8a.pdfIn PDF document text
    • https://cdn.sqhk.co/pepegejivo/j5FVLhh/water_jet_ski_boat_racing_mod_apk.pdfIn PDF document text
    • http://chatik85939775.fun/corte_bob_rectomib9v.pdfIn PDF document text
    • http://thechambre.xyz/fundamentals_of_communication_skills9dkgn.pdfIn PDF document text
    • https://cdn.sqhk.co/jolodovi/hjdjztw/femujaradamereded.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479454/normal_601ae096d99a5.pdfIn PDF document text
    • https://cdn.sqhk.co/jarixizotib/eigjcia/bidazeju.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381737/normal_5fdb218d4f3ed.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/desenaz/35308063948.pdfIn PDF document text
    • https://s3.amazonaws.com/zakunafu/1001_nights_music.pdfIn PDF document text
    • http://bekujosekufeto.epizy.com/binge_eating_disorder_books.pdfIn PDF document text
    • https://s3.amazonaws.com/zisulamisozoto/grignard_reaction_practice_problems_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/tofizo/55173837429.pdfIn PDF document text
    • https://s3.amazonaws.com/rogugagatuf/lidawavoxawoturexifo.pdfIn PDF document text
    • https://s3.amazonaws.com/rafiralexezol/calculating_circumference_of_a_circle_worksheet.pdfIn PDF document text
    • http://mijugavagi.epizy.com/tenaxukofikufojux.pdfIn PDF document text
    • http://ximitexus.epizy.com/online_translate_language.pdfIn PDF document text
    • http://xuwunokebisul.rf.gd/muvunifunisimidopako.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_off0000ea97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA97 5276 bytes
SHA-256: 0ae1e8c6feb170768c5f299ab2643b2c388b7b36448aed2315139d0d35806a9f
font_01_sfnt_off0000fc9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC9C 10484 bytes
SHA-256: 57ba9e2fe32b6fbf926b16717f17925842c3addcae8ac39384fe5d9fed069d40