Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b8ed7391c3b3076…

MALICIOUS

PDF

64.5 KB Created: 2021-02-16 10:55:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 17d3db3b8594318d5a8e663cadd021c4 SHA-1: 7e8423bb6e7b5d4f1199efc5efcc07aba17ef286 SHA-256: 5b8ed7391c3b3076b81ab0821a34aa9e25294c3717f20965ca94a8ba808602f1
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/wb?keyword=can%20you%20use%20microsoft%20teams%20on%20an%20ipad PDF link annotation
    • http://amandeepsadyora.com/positive_and_negative_number_line_worksheets95u6g.pdfIn PDF document text
    • http://creamwalls.space/3572071245rwhi3.pdfIn PDF document text
    • https://cdn.sqhk.co/jimavidozeze/0YbhgZh/tom_and_jerry_cartoons_2020.pdfIn PDF document text
    • http://momentikshop.space/jupiter_merlin_income_factsheethof4q.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366366/normal_5ff8dd9c69586.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428054/normal_600c1b4c7230e.pdfIn PDF document text
    • https://cdn.sqhk.co/forexidof/hjXNWu6/48793392470.pdfIn PDF document text
    • https://cdn.sqhk.co/pavoraxebute/4gfBMib/71976210235.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445750/normal_601f1f2d411df.pdfIn PDF document text
    • https://cdn.sqhk.co/losokifape/hchhj3p/splash_mountain_water_park_ocean_city_maryland.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/lopadivupudexa/zawifegabix.pdfIn PDF document text
    • https://s3.amazonaws.com/resabomibogodaw/6381037979.pdfIn PDF document text
    • https://s3.amazonaws.com/wotodedaruzuk/rearrange_pages_acrobat_xi.pdfIn PDF document text
    • http://tibibexubedumu.rf.gd/answer_love_yourself_color_coded.pdfIn PDF document text
    • https://s3.amazonaws.com/mujesogi/gevukupirepipimid.pdfIn PDF document text
    • http://jenabarove.epizy.com/radial_engine_drawings.pdfIn PDF document text
    • http://biwexasen.rf.gd/carprog_mcu_manual.pdfIn PDF document text
    • http://bubexixan.epizy.com/video_editing_app_android_no_watermark.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_off0000c2c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2C4 5276 bytes
SHA-256: f55e1a215b93c73444bec6105d01de172bf8b1356bde4e4ab26c51f4a9fd13c4
font_01_sfnt_off0000d4a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4A8 9496 bytes
SHA-256: 5710eaed735dcff5cc7d9f97f8919a0b233630a43e145db7bda50eac9f018401