Malicious PDF — malware analysis report

Static analysis result for SHA-256 be6b50838ad69e37…

MALICIOUS

PDF

70.1 KB Created: 2021-02-11 21:52:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: d9062bd38bec3490e81a1d9669d97199 SHA-1: 3d6b126176c95681c63e735dc29de1ef57fe89d6 SHA-256: be6b50838ad69e377c3849f3d20ea38ec22eaf0236f3dce2308f3678adbb3e68
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://maypoin.ru/wix?keyword=seasons+in+spanish+song PDF link annotation
    • https://cdn.sqhk.co/subilikiwi/hehewWh/95207329094.pdfIn PDF document text
    • https://xomixosusanit.weebly.com/uploads/1/3/1/4/131438267/buwida-bakepa.pdfIn PDF document text
    • http://bachanalytics.com/24168752673aj4aa.pdfIn PDF document text
    • https://cdn.sqhk.co/silakozafi/MMnkhcL/wepepoketuvo.pdfIn PDF document text
    • https://cdn.sqhk.co/nezerozara/ijfD3ja/piano_master_2._22_full_apk.pdfIn PDF document text
    • https://keduwiwisa.weebly.com/uploads/1/3/4/4/134486116/4508738.pdfIn PDF document text
    • http://servempieza.site/jotun_hardtop_xp_product_data_sheetln570.pdfIn PDF document text
    • https://cdn.sqhk.co/kokedipemi/heShhgc/free_2nd_grade_math_learning_games.pdfIn PDF document text
    • http://libertinemodels.com/lenovuridiboniymf6d.pdfIn PDF document text
    • https://cdn.sqhk.co/pivugisaxap/gijgige/bad_banks_staffel_2_review.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/fejenijovekozu/anganwadi_form_kaise_bhare_offline.pdfIn PDF document text
    • https://s3.amazonaws.com/nilafafakem/emergency_drill_report_template.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_off0000d8d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8D6 5056 bytes
SHA-256: 428e2405c731b2c5efcf4441dec03dafd2a6b3ffab3d13d56a43b49fd22ed6a5
font_01_sfnt_off0000ea07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA07 9940 bytes
SHA-256: be7cdea45a4ea4fe10db8d27ed65be076506a1141e8fcb9766bb2287351642f6