Malicious PDF — malware analysis report

Static analysis result for SHA-256 35cc451485def572…

MALICIOUS

PDF

67.2 KB Created: 2021-02-12 09:55:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 8eca39f2b183f56f37cfde9659113f49 SHA-1: 40cb68e8c876b1df5c755237e8f7f95415f35ab4 SHA-256: 35cc451485def5724ac7e6e43860e6415a3668265441fb16f8674698d11753c3
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://jacksth.ru/123?utm_term=p5+pentalobe+screwdriver+best+buy PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4453754/normal_5fff0413a9885.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368504/normal_60111f96030e5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375509/normal_600ae2f33a3f2.pdfIn PDF document text
    • https://cdn.sqhk.co/negapevu/gciisjf/lg_smart_tv_remote_control_guide.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/lorerexeg/planning_cours_cercle_de_la_forme_chatillon.pdfIn PDF document text
    • https://s3.amazonaws.com/zufaxepixiguxax/59613941139.pdfIn PDF document text
    • https://s3.amazonaws.com/jazofi/81513195175.pdfIn PDF document text
    • https://s3.amazonaws.com/tupofelasujewas/blue_green_background_template.pdfIn PDF document text
    • http://nigukeja.epizy.com/numbers_in_japanese_hiragana.pdfIn PDF document text
    • http://bonubenevutura.epizy.com/pathogenic_microbiology_study_guide.pdfIn PDF document text
    • http://vavilonogamet.epizy.com/miwedegup.pdfIn PDF document text
    • https://s3.amazonaws.com/gavapozalilup/78086791877.pdfIn PDF document text
    • https://s3.amazonaws.com/gedexim/behringer_xr16_manuale_italiano.pdfIn PDF document text
    • https://s3.amazonaws.com/wazotojemov/5478904046.pdfIn PDF document text
    • http://nadovudeduxawos.rf.gd/free_business_card_and_letterhead_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_off0000c7fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7FE 5588 bytes
SHA-256: 06d2721787334c2d34da1b614d2fa3ba3ccf8cbd0aa17a29d87d3d1a4c831cbd
font_01_sfnt_off0000db22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB22 10884 bytes
SHA-256: 67f0f89455b93e9c0f418eb5281adaff15da33f753e88c1ede29fb974874f3f1