Malicious PDF — malware analysis report

Static analysis result for SHA-256 10d2d181ba2a1758…

MALICIOUS

PDF

74.9 KB Created: 2021-02-08 02:01:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 3e14a530de227d8384f8f9811ea8134f SHA-1: a26a1c6866fddb4bdfd24883e30683ad4e1521c7 SHA-256: 10d2d181ba2a17580e3775779936e505360076fa18105223816231bf49d78af8
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://jacksth.ru/wb?keyword=the%20blob%201988%20full%20movie%20free PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4484356/normal_5fe7f1b5e37c4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450160/normal_600c9d5aa306d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390996/normal_5fda43051dc49.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487419/normal_601046bbe979e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477400/normal_5febd10f8fd18.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4530151/normal_5fc8142750301.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384160/normal_5ff3f77861b3d.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/sowirutelevolur/amoretti_sonnet_75.pdfIn PDF document text
    • https://s3.amazonaws.com/watajive/ielts_cambridge_listening_test_3_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/perurulexi/mandatory_reporting_sa_phone_number.pdfIn PDF document text
    • https://s3.amazonaws.com/pizexopenaxu/7197980692.pdfIn PDF document text
    • https://s3.amazonaws.com/desekusoxi/different_branches_of_psychology.pdfIn PDF document text
    • https://s3.amazonaws.com/jebokizez/rimovidegimenawusi.pdfIn PDF document text
    • https://s3.amazonaws.com/robumuduluwise/street_fighter_game_android_phone.pdfIn PDF document text
    • https://s3.amazonaws.com/kuxuxemu/gitipozenukita.pdfIn PDF document text
    • https://s3.amazonaws.com/pokixovuxik/sivotogevugivudu.pdfIn PDF document text
    • https://s3.amazonaws.com/rutufokedizon/brave_soul_coat_size_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/zulezov/pdf_hunger_games_bahasa_indonesia.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_off0000e8c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8C3 5172 bytes
SHA-256: 3ca859b004382d96fadef4d3def2efc7bfc54e6b319917b346842e62329563ff
font_01_sfnt_off0000fa3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA3F 10668 bytes
SHA-256: a854e36319063ec2de4b725b374f72f144691ee95d4c5dafa0f905dbb187c94a