Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e5bd8ee7a754bda…

MALICIOUS

PDF

81.2 KB Created: 2021-05-03 03:59:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: cda424c64e6dee6525eda34b358ecfc8 SHA-1: 506ee112d3df58732e46da5fb9003ace672a9006 SHA-256: 8e5bd8ee7a754bdad3f6dfd194f9e9941fab045dd0162b09a70e09a29bfaa069
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://lozipotod.ru/strik?utm_term=astro+a20+xbox+one+wireless PDF link annotation
    • https://cdn.sqhk.co/melalisopapu/SnjcMFC/adblock_chrome_android_samsung.pdfIn PDF document text
    • https://cdn.sqhk.co/kibukiwovi/h6DNgek/32880894464.pdfIn PDF document text
    • http://verokunutez.22web.org/cancionero_de_rock_nacional_argentino_para_guitarra.pdfIn PDF document text
    • http://miiliioner.xyz/kurepy21c0.pdfIn PDF document text
    • https://cdn.sqhk.co/sovajepuxe/idHhjlu/bubble_tea_emoji_twitter.pdfIn PDF document text
    • https://cdn.sqhk.co/mapetidul/yEgeiZF/33650781181.pdfIn PDF document text
    • https://cdn.sqhk.co/levuzivanu/ijhehdb/rogibigesijudebifijorix.pdfIn PDF document text
    • https://cdn.sqhk.co/dufubimaru/eiijbU1/30927262983.pdfIn PDF document text
    • https://cdn.sqhk.co/pelopuxi/bf1zy36/84715249792.pdfIn PDF document text
    • http://wspring.space/776324341161yj7.pdfIn PDF document text
    • https://cdn.sqhk.co/bixatavafut/X0jbje6/wallpaper_2020_happy_new_year_shayari_download.pdfIn PDF document text
    • http://esmoney.site/juxutinonefunaguf6eoj6.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/399e3ec7-77a2-4a29-bf0a-6f29e454b6d9/5903877527.pdfIn PDF document text
    • http://zubixuguse.epizy.com/ccc_water_connection_application_form.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe5e8974-01a6-4107-9009-ceae5957e3fc/sutubegazifus.pdfIn PDF document text
    • http://tevufom.epizy.com/87759425193.pdfIn PDF document text
    • http://durozebexonadop.rf.gd/about_us_webpage_template_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8743d64b-d568-44f8-83c7-0ea1d1f8abd9/lasexorav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5081b2f-bf09-4bfc-821b-17ceafa520f3/98295643843.pdfIn PDF document text
    • http://rewigikokisiw.epizy.com/professors_bcs_question_bank.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ba44d2f-e83e-4d86-aa68-99572ed1514b/business_analyst_certification_courses_in_bangalore.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_off0000fab9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAB9 5240 bytes
SHA-256: 7c4ca3877c2c377f6dfa4abc161cd7ba65300dbb668f71a9ef3c44e9bcb79150
font_01_sfnt_off00010cab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CAB 14336 bytes
SHA-256: 788e8feac9957035159aaa36ac498dc673e08e4910f74069c8599023c3c1f573

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