Malicious PDF — malware analysis report

Static analysis result for SHA-256 f52cfad8e677049d…

MALICIOUS

PDF

79.9 KB Created: 2021-02-05 06:59:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 081beba0342f8c483eb04b40a7e19ac2 SHA-1: 19d7dba6b641004ac89b3b404d1daf1546e1541d SHA-256: f52cfad8e677049d0db9619ef8defda310f5d24fdf04316d2f25f6a14b9803ce
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://jottigo.ru/aws?utm_term=bootstrap+form+border+bottom PDF link annotation
    • https://cdn.sqhk.co/bibilofefi/jcgc5if/clock_change_tonight_uk.pdfIn PDF document text
    • https://cdn.sqhk.co/gulanuwe/R3hidgg/3d_checkers_print.pdfIn PDF document text
    • http://ezfix.asia/bert_hellinger_livroswoq70.pdfIn PDF document text
    • https://cdn.sqhk.co/lobinazema/zichcjf/astuces_de_grand_mere_pour_maigrir_vite.pdfIn PDF document text
    • https://cdn.sqhk.co/puvubuzu/ggjDre8/slenderman_mod_minecraft_1._15._2.pdfIn PDF document text
    • https://cdn.sqhk.co/pamomusemida/jbhfDuG/21157991052.pdfIn PDF document text
    • http://discout.online/nelogazijobosita9fvny.pdfIn PDF document text
    • http://spoonnumberone.xyz/music_player_pro_apk_download_freet2n7t.pdfIn PDF document text
    • https://cdn.sqhk.co/xuzuvazol/WOhgvid/xabuwonelilinadozewireke.pdfIn PDF document text
    • http://alisaborodaenko.design/annihilation_jeff_vandermeer_freenq9ur.pdfIn PDF document text
    • http://adanakebap.org/89830452045p4g0f.pdfIn PDF document text
    • https://cdn.sqhk.co/barugogip/ihgjhhM/2009_d_penny_e_pluribus_unum_value.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/xidulumexi/cumulative_binomial_table.pdfIn PDF document text
    • https://s3.amazonaws.com/lekizopiloref/firefox_51_for_linux_64_bit.pdfIn PDF document text
    • https://s3.amazonaws.com/bubeto/the_good_witch_season_1_episode_guide.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_off0000e60a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE60A 5344 bytes
SHA-256: 1faf9580af786d8bd109d733ad0c2435cc63b7f1762c853759e0dde57cafa8b5
font_01_sfnt_off0000f81e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF81E 20988 bytes
SHA-256: 01c9a4c09c73f57d7001bd214ffac167ba3dc1b9ee9f5fcbb6e317a9156bd4a8