Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa5ddc632aaf8664…

MALICIOUS

PDF

69.5 KB Created: 2020-12-07 15:34:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: f28da27ca2a6836961beff089429beee SHA-1: d741589f71a940f7a89514ee9f54302b71ab2365 SHA-256: aa5ddc632aaf86645d88f9b473939ac2f6987038f23bdd319985b2baf232682f
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://trafffi.ru/123?utm_term=hoja+de+maguey+en+ingles PDF link annotation
    • https://jakemujilofadam.weebly.com/uploads/1/3/1/3/131380171/1287566.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369796/normal_5fadd0d877078.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366029/normal_5f87ade295fe9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420745/normal_5fa699de86503.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448746/normal_5fcd37f92fd09.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421215/normal_5f9e32c414142.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/f52f84ba-baf4-4021-8713-9419a419775b/xenakuwu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc112c117e7202640eb3140/t/5fca02569309303fb83615f1/1607074390331/lofasavamurivetonubegenu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5d031084698658e80009c/t/5fc9aaf14e3f3d2517387392/1607052017459/seruxegunotudu.pdfIn PDF document text
    • https://s3.amazonaws.com/zufaxepixiguxax/bukufomova.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc362e5c30a162e0c62626b/t/5fcb38260814be4f73e5cd57/1607153703391/guided_reading_books.pdfIn PDF document text
    • https://s3.amazonaws.com/gebukil/manopokukagafabijuzib.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2aebbb8467722f1dfa14b/t/5fc37152145a8629dc1cab20/1606644050749/gas_airsoft_guns_ebay.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc10620bf71053ccb10dd13/t/5fc244eff8cdb769c62e223a/1606567156270/basher_oceans_11_gif.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc34073df132613bbcce8b2/t/5fc5143a3485235c866702b1/1606751292467/93795206809.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_off0000d074.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD074 5188 bytes
SHA-256: 4aa6e699011e8028a61040c17a08994be2d8a4ae96501d1358d2bcbf91475c27
font_01_sfnt_off0000e21e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE21E 11700 bytes
SHA-256: b1123473f944483e69e29684183fa3e9accdb32d2025571b94eafd62a3d7027b