Malicious PDF — malware analysis report

Static analysis result for SHA-256 da114ed1e2d68516…

MALICIOUS

PDF

69.1 KB Created: 2021-02-18 22:24:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 7f7096316f34345276e7abc99871d8bb SHA-1: 6c69295afafe4f2ea28be02655288df31467b563 SHA-256: da114ed1e2d68516fdf798b844900f6135acbc9d5bad457e76e2ab247897829f
184 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wix?keyword=lamb+to+the+slaughter+worksheet+pdf In PDF document text
    • https://cdn.sqhk.co/lonubugogere/GMjiCgg/improve_camera_quality_iphone.pdfIn PDF document text
    • http://lidzadva.xyz/saxon_math_book_4th_grade_answers5pgm0.pdfIn PDF document text
    • https://cdn.sqhk.co/nivodoruw/iaEjfLO/best_ninja_foodi_cookbook.pdfIn PDF document text
    • http://koolmaxt.online/kemper_profiling_amp_powerhead_bundle81nt1.pdfIn PDF document text
    • https://cdn.sqhk.co/zonakagud/jh6w7gi/vampires_show_netflix_review.pdfIn PDF document text
    • http://rusherx.studio/physical_education_class_11_cbse_book_download_in_englishuyx8o.pdfIn PDF document text
    • http://gonzo-3d.com/298921589152ezp7.pdfIn PDF document text
    • http://techanomic.com/gikuxijifumonezc9cj4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379489/normal_602c7719b3e89.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403121/normal_5fd33f5ba4a48.pdfIn PDF document text
    • https://cdn.sqhk.co/fudikuzi/6jTIwJ0/pozexozufulipi.pdfIn PDF document text
    • https://cdn.sqhk.co/nowavutu/ghgejeq/declaration_of_war_ww2_newspaper.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385030/normal_5fef46467a34d.pdfIn PDF document text
    • http://tells.fun/nibetekizetijor3fwq.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489724/normal_601b424aa693d.pdfIn PDF document text
    • https://cdn.sqhk.co/jojojidatun/UgcvjiR/vagopibovemo.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/xeponodij/the_circularity_gap_report_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/tazopaju/zotanupuboratujuzuse.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_off0000ce9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE9E 5692 bytes
SHA-256: 4cfea262c0c6aaec3a358142a2023ed949c4db52a744108e5426843f27333bbd
font_01_sfnt_off0000e1df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1DF 10904 bytes
SHA-256: 599db7b3ad2d08ad6296b0430648620e4235d2bac2cfca2247f2580e1c1e75e0

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