Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ce6910d702c30b0…

MALICIOUS

PDF

71.7 KB Created: 2021-02-10 20:36:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 3c8814956bf17428a005044395222f93 SHA-1: 336f5e8c42c1892b35307b28b982e7199fe8af01 SHA-256: 4ce6910d702c30b0d44c674642f4a1c6666d0b75269492e84d98a0eac210a295
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://bologen.ru/123?utm_term=flowers+for+algernon+teaching+guide PDF link annotation
    • http://gididowofugu.iblogger.org/sadob.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392218/normal_5ffb321bbfdf9.pdfIn PDF document text
    • http://kulokozataxat.22web.org/67269210723.pdfIn PDF document text
    • https://cdn.sqhk.co/jomenuluz/jfNAchc/dunia_games_redeem_code.pdfIn PDF document text
    • https://cdn.sqhk.co/fajoliteve/6hdTWKo/3415016923.pdfIn PDF document text
    • https://cdn.sqhk.co/lokovipazal/eE9nqw3/starlink_rocket_launch_today_uk.pdfIn PDF document text
    • https://cdn.sqhk.co/kanedufopuma/ejjjhxe/voting_presidential_election_2020_date.pdfIn PDF document text
    • https://cdn.sqhk.co/wegodimumod/ajdnxWt/principles_of_management_book_by_harold_koontz.pdfIn PDF document text
    • https://cdn.sqhk.co/xawodoze/aF2ligN/weluxevabepadejozuzufemu.pdfIn PDF document text
    • https://cdn.sqhk.co/doboketuzoj/jhbasij/cats_crash_arena_turbo_stars_apk_uptodown.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420025/normal_6020d4d584e60.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419412/normal_5fc94080b8c5d.pdfIn PDF document text
    • https://cdn.sqhk.co/pixafosabow/if6cjaN/16862158130.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xevorerokune.epizy.com/58604969451.pdfIn PDF document text
    • https://s3.amazonaws.com/viwoxuz/jozarusu.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_off0000dcfa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCFA 5332 bytes
SHA-256: 081c6a2c25601c8349fad95ec6731247fd0e1b43445c444d8280229d27acf384
font_01_sfnt_off0000ef25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF25 10316 bytes
SHA-256: 0a2780428156d4048c439449cc3d13d514673e517843f15213c395ebebbfcf8a