Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1f0df15987e8c9a…

MALICIOUS

PDF

71.7 KB Created: 2021-02-14 04:53:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 0f3ef769735e34b9357190b6e55c38d6 SHA-1: 02b60ef64f4587ebde42813fded6eb6a99ae0d18 SHA-256: e1f0df15987e8c9a0b0b926cabb623c84373d0e236b1c719c79e4465316569bb
136 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
  • 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://druttle.ru/wix?keyword=how+to+pair+logitech+keyboard+k270 PDF link annotation
    • http://vezokikawelin.iblogger.org/povafusobitufogesetamif.pdfIn PDF document text
    • http://pefujogori.iblogger.org/delosikivoje.pdfIn PDF document text
    • http://revujutipisan.22web.org/jeffree_star_beauty_killer.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379732/normal_60044f2153174.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454056/normal_5fc5e8b33797d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463812/normal_5ff3122391209.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/rutufokedizon/neither_nor_either_or_exercises.pdfIn PDF document text
    • https://s3.amazonaws.com/rufonali/kuwixejab.pdfIn PDF document text
    • https://s3.amazonaws.com/potofaw/ragodivifuwutefegifixodig.pdfIn PDF document text
    • https://s3.amazonaws.com/migivewuwe/ncert_class_7_maths_comparing_quantities_worksheets.pdfIn PDF document text
    • http://zumewozuzetarun.epizy.com/fruits_of_the_holy_spirit_catholic.pdfIn PDF document text
    • https://s3.amazonaws.com/wotodedaruzuk/rearrange_pages_acrobat_xi.pdfIn PDF document text
    • https://s3.amazonaws.com/tasufagijaremo/verb_exercises_with_answers_for_class_2.pdfIn PDF document text
    • https://s3.amazonaws.com/vabemavuputenif/vilobofoxatebi.pdfIn PDF document text
    • https://s3.amazonaws.com/zugutixe/binomial_expansion_approximation_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/sazomo/asme_section_ix_2010_free.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c676.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC676 5868 bytes
SHA-256: 41123f5ac3ce8ce4eaa0e93ddf517a9bc6ee27fc2acb2598b0417f7c7bc6ef43
font_01_sfnt_off0000da77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA77 1800 bytes
SHA-256: e9a5a1f6ed95b1e3669933bb00002ad32a1708c3e0b735191cad5e02368a6c7d
font_02_sfnt_off0000e305.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE305 14916 bytes
SHA-256: 27d9555ec19888dc10f66b5a6fe7efdbb6ee9a1953e4ec025ee1bb16732ec827