Malicious PDF — malware analysis report

Static analysis result for SHA-256 868e1238dcaf8db5…

MALICIOUS

PDF

70.3 KB Created: 2021-03-03 00:53:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: f71f9655db8ae5910c731bcb545483ce SHA-1: d3bde2f5b27f60ad6f51f76a986698f073d2edbd SHA-256: 868e1238dcaf8db567aeab2b96cd7202ea5be31c0bb466fbacca070a7ff95582
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://dugedepap.ru/award?keyword=chrono+trigger+frog+theme+piano+sheet+music PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4421623/normal_6007275f04ef1.pdfIn PDF document text
    • http://tufezoba.22web.org/ashokan_farewell_sheet_music_violin.pdfIn PDF document text
    • http://xomaweluk.22web.org/gifts_three_houses_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/tezofugowura/jjdTibs/fiat_maximum_care_warranty.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480745/normal_5fd2d8b366078.pdfIn PDF document text
    • https://cdn.sqhk.co/mawejoxejobe/aNhh6Vv/bavoxiwu.pdfIn PDF document text
    • https://cdn.sqhk.co/rabataxuvax/bCSyMrk/walking_dead_creatures_crossword_clue.pdfIn PDF document text
    • https://cdn.sqhk.co/jebavimot/geUciec/25986479515.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445338/normal_6039c88307f09.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/pobixedele/25997663398.pdfIn PDF document text
    • http://rizibapuzaduxe.epizy.com/counter_strike_1._6_apk_ios.pdfIn PDF document text
    • https://s3.amazonaws.com/nisiwanolom/mts_answer_key_2019_gradeup.pdfIn PDF document text
    • https://s3.amazonaws.com/gewuwasi/36421635185.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c97f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC97F 5304 bytes
SHA-256: cfdb6f3505b6b68322f3c3325139a6a8d5c395b9d1d604bfa28f335300170c21
font_01_sfnt_off0000db64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB64 10156 bytes
SHA-256: ea45ccf16b7f26f59c9bca7d301b88946b2b9f8e2d86da78556175377f2732a7
font_02_sfnt_off0000fe38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE38 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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