Malicious PDF — malware analysis report

Static analysis result for SHA-256 3571e21cf37e881a…

MALICIOUS

PDF

68.6 KB Created: 2021-02-24 04:26:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 0c10a9927ceb152c47f02ad56f9cfd3f SHA-1: cc4b7460087643d640d39ff47d0a7a16d5ab7286 SHA-256: 3571e21cf37e881ab1c52d541e340dae047a708e5a0c051d046a948857c5db90
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://baarspo.ru/123?utm_term=how+to+get+my+1099+ssa PDF link annotation
    • http://xubajaw.iblogger.org/bose_av3-2-1ll_media_center.pdfIn PDF document text
    • https://cdn.sqhk.co/gusiloxi/d0iaG1K/stackers_energy_pills_ingredients.pdfIn PDF document text
    • https://cdn.sqhk.co/vekotevudoze/IzLggid/gatewabolixel.pdfIn PDF document text
    • https://cdn.sqhk.co/wezikinupig/2ajj1jc/39566643283.pdfIn PDF document text
    • https://cdn.sqhk.co/remimidotomi/jbKs01A/30th_birthday_decoration_ideas_for_him.pdfIn PDF document text
    • https://cdn.sqhk.co/xarozowuzosa/7rggDji/76106125140.pdfIn PDF document text
    • http://tonalemeketav.66ghz.com/logiciel_pour_combiner_des_fichiers.pdfIn PDF document text
    • https://cdn.sqhk.co/jagapifa/hejjehh/cleaning_checklist_printable_template.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412768/normal_5fd2aa34201ab.pdfIn PDF document text
    • https://cdn.sqhk.co/metexemoraga/XzhfXhb/best_american_football_players_in_europe.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/jubiferekaka/43565822984.pdfIn PDF document text
    • https://s3.amazonaws.com/dabatisew/agricultural_science_textbook_grade_11.pdfIn PDF document text
    • http://nupifikitove.epizy.com/cover_letter_template_for_pages_mac.pdfIn PDF document text
    • http://kotidaw.epizy.com/letterhead_design_cdr_file_free.pdfIn PDF document text
    • https://s3.amazonaws.com/tinivukedeta/47114969363.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_off0000cf51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF51 5380 bytes
SHA-256: e915b74412f09f13ce7c5617b5f9c22b2c29f125809abb871713cfcdf5598154
font_01_sfnt_off0000e1b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1B3 10768 bytes
SHA-256: 8071b4cc8746b8e7fecfec93650627665bf959c1dc34c0642419a828aad7ceaa