Malicious PDF — malware analysis report

Static analysis result for SHA-256 18ca7fe24ff3a6cb…

MALICIOUS

PDF

82.4 KB Created: 2021-01-24 11:36:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-31
MD5: ec86f5db869f25525acea72181101d10 SHA-1: f7aa1bb420f1ad8f7e89571b00357ef5a0928859 SHA-256: 18ca7fe24ff3a6cba30b742cb7bf0570bced0057531ec1c551590ab320533bf5
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://trafficel.ru/123?utm_term=reverse+alphabet+in+python PDF link annotation
    • http://ses-paypal.com/27894717629ted50.pdfIn PDF document text
    • http://pro-komp-master.website/troom_troom_espanol_nuevos_2020mvv4s.pdfIn PDF document text
    • https://cdn.sqhk.co/kagalitisup/njcqjbT/paint_by_numbers_kit.pdfIn PDF document text
    • http://b0xberry.online/tirizujogenuwuvazigirirosyr3t9.pdfIn PDF document text
    • http://sellforce.ru/reina_theme_park_apk_for_oreoi3r1z.pdfIn PDF document text
    • https://cdn.sqhk.co/manuguwe/PjJgheG/minecraft_escape_prison_map_1._12._2.pdfIn PDF document text
    • http://shoop-fg.ru/climbing_rocky_mountain_national_park9qzcu.pdfIn PDF document text
    • http://manthoughtswebsite.website/sukijujuxujolanage6r7at.pdfIn PDF document text
    • https://cdn.sqhk.co/lotivadafe/aE4hhij/mebifuxisut.pdfIn PDF document text
    • https://cdn.sqhk.co/xanapaje/big6hfU/lock_screen_ios_13_hd_wallpapers_1080p.pdfIn PDF document text
    • http://businesslinecenter.com/duripemicl67i.pdfIn PDF document text
    • https://cdn.sqhk.co/vawikepaf/Kf6zgfQ/emergency_kit_food_list.pdfIn PDF document text
    • https://cdn.sqhk.co/wazuvegox/g6vhbYE/klassroom_appel_video.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/putelekireza/chitta_punjabi_song_ringtone.pdfIn PDF document text
    • https://s3.amazonaws.com/tumasun/paint_3d_software_for_windows_7.pdfIn PDF document text
    • https://s3.amazonaws.com/webipejonavuv/92436542595.pdfIn PDF document text
    • https://s3.amazonaws.com/tutasujal/61654228132.pdfIn PDF document text
    • https://s3.amazonaws.com/nolarifaforuxop/calcolo_cemento_armato.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_off00010342.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10342 5216 bytes
SHA-256: 4b3e6d9e69b8bd7ab06d68915775ee387e25d175add5c8dfff2a7a1ad887c27b
font_01_sfnt_off00011503.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11503 11700 bytes
SHA-256: c5b01a31e787a400e6efe1c524da24904c39d52a63667793af0536853cd4dcf4