Malicious PDF — malware analysis report

Static analysis result for SHA-256 5adf0086047a6eac…

MALICIOUS

PDF

43.6 KB Created: 2020-11-09 14:47:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 026390d7b4bac10a9cdc466b178743f7 SHA-1: f0076bbe7ceeeb47c80ebf0dc31c1738801d2fb3 SHA-256: 5adf0086047a6eac05cfaad5b2d923f8d6734ff1d67585f251c761b5749b2863
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://traffset.ru/aws?keyword=fermentation+lab+answers PDF link annotation
    • https://wilujogid.weebly.com/uploads/1/3/4/3/134347442/4785665.pdfIn PDF document text
    • https://jobubati.weebly.com/uploads/1/3/1/4/131453688/gamifa_rapiwe.pdfIn PDF document text
    • https://riragojefo.weebly.com/uploads/1/3/1/8/131857115/kexugonowidonuj-bekogebon-fusubulixerawaw-nugomama.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6503acc-80ad-4beb-8c04-c5f29dfb406d/61474850518.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a69f0c63-b888-404f-af2a-fbac579d4db4/xezolexixadusegagojivu.pdfIn PDF document text
    • https://s3.amazonaws.com/sefipa/directions_to_arundel_mills_mall_in_maryland.pdfIn PDF document text
    • https://s3.amazonaws.com/zalomi/38437655116.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f38c96b1-fb0d-4d07-8d4f-06f4c386ad91/zirozisaxubetobumukovegub.pdfIn PDF document text
    • https://s3.amazonaws.com/wivunonovef/14829227338.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/litiguvemipepegopa.pdfIn PDF document text
    • https://s3.amazonaws.com/sesafefanulokam/pedunedemagesu.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/95117516390.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_off000068e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68E8 5016 bytes
SHA-256: 729297633c4f0bb67f2eaa03e02eb72ea1c40c14150d1b06ddad91a97658f570
font_01_sfnt_off000079ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79EA 11788 bytes
SHA-256: 2b986825670c3af91aab4e7e74a07cb5bd79e8e1e626c092f47c12f5719a1214