Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1cbbb04e537f6db…

MALICIOUS

PDF

70.2 KB Created: 2020-12-27 05:54:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: c4d762e903414272a40ed77530727990 SHA-1: 81e655f3a3a4f0efcdf1e239bb01ce0a84189384 SHA-256: f1cbbb04e537f6db40f6f50b5add9331d5b9b308fd328a3a71feac201b3b9801
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://traffset.ru/wb?keyword=big%20winds%20sale PDF link annotation
    • https://cdn.sqhk.co/navififoro/FjgjfLe/freedom_or_union_freedom.pdfIn PDF document text
    • https://cdn.sqhk.co/dijobika/hdgiiav/ants_go_marching_lyrics_cocomelon.pdfIn PDF document text
    • https://cdn.sqhk.co/lawafopugu/t4jcSii/cards_and_castles_2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420745/normal_5f9f650dc179c.pdfIn PDF document text
    • https://cdn.sqhk.co/guzunilepin/ggfUhaX/vobufiludututibejewelufed.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465398/normal_5fded9249fb32.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380393/normal_5fd063308a5d6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416132/normal_5fcc5584a73df.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/83f0833c-fdc9-4fea-a365-bace6b9d59ab/ghost_rider_face_3d_wallpaper.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b1c771f6-3831-47be-9278-f4275cdc1ca1/evo_cat_food_replacement.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8830464-0ff0-4d8c-a26e-3f3b718bb001/92929874427.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2caef985-5214-4c1f-b862-eae23b6318be/pakonetarodujeduriz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ede3e1e-fd55-4b48-a2ee-d78319f32c79/which_of_the_following_is_not_an_example_of_an_unconditioned_response.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c00d645-0001-4adf-969a-9d92d5942c66/airplane_mode_movie_netflix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/99d2dbbb-cd13-4f32-9666-4f032842ca09/canon_mp495_driver_download_windows_10.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_off0000d86d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD86D 5040 bytes
SHA-256: 8d058d5e4561d58692f5037f9426ac84b9b3292de27bcad9880208183ca222cc
font_01_sfnt_off0000e9be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9BE 10148 bytes
SHA-256: 8f8703e86677579113dfa1d8ec608bb42f7540d6e6b2331b5db91fafbfa42866