Malicious PDF — malware analysis report

Static analysis result for SHA-256 5606ad6672419b0c…

MALICIOUS

PDF

63.1 KB Created: 2021-01-26 08:23:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: ae62541a57fd92dadaa504ce30541f0a SHA-1: 27fc65008992a2d8874faf96673d2973ec3ea5b8 SHA-256: 5606ad6672419b0c28501b987bde0cef2c203d80c090a863d8bdb62c91151ba7
194 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/123?utm_term=miss+universe+questions+catriona In PDF document text
    • https://cdn.sqhk.co/fofesali/9K0xwnV/steppy_pants_game.pdfIn PDF document text
    • https://cdn.sqhk.co/mojikeke/hekihOS/36699744812.pdfIn PDF document text
    • https://cdn.sqhk.co/losajaro/jeaieYF/jumabaxenaruxesefival.pdfIn PDF document text
    • https://cdn.sqhk.co/zetobazox/Ajhifpz/36475823052.pdfIn PDF document text
    • https://cdn.sqhk.co/lutaxudepoje/W5gYhgb/49363069845.pdfIn PDF document text
    • https://cdn.sqhk.co/gotofebelu/Puhihhy/jailbreak_prisoner_prison_escape_survival_games_ps4.pdfIn PDF document text
    • http://rarebuzoxexovom.22web.org/anaphylaxis_treatment_nice_guidelines.pdfIn PDF document text
    • https://cdn.sqhk.co/dixejetafap/Hhdremh/ge_universal_remote_control_codes_for_element_tv.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/mubemutolewe/sagalobulase.pdfIn PDF document text
    • https://s3.amazonaws.com/tapexiw/buworezo.pdfIn PDF document text
    • https://s3.amazonaws.com/timeziso/cancer_de_prostata_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/tanapilamaxi/adobe_acrobat_writer_free_trial.pdfIn PDF document text
    • https://s3.amazonaws.com/wulagisi/blackpink_stay_mp4.pdfIn PDF document text
    • http://sejofedavija.epizy.com/xadezagora.pdfIn PDF document text
    • https://s3.amazonaws.com/bejikefowu/15383829583.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_off0000bb4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB4E 4952 bytes
SHA-256: 5a244d00e3851aaf829f24f322bd3807fbf4c00cc8e0daa7ed40a059f36a3ac4
font_01_sfnt_off0000cc4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC4C 10412 bytes
SHA-256: 9e99e82ecad36da446c3307cf6f9dd0a487b29b4355a540cbff3fafab04471d7