Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed8172aec3503d1b…

MALICIOUS

PDF

36.7 KB Created: 2020-11-06 15:19:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: 4bccf9b59d0757198b988796fbd58d26 SHA-1: 17bce313ff5785f495fc8d2bbf3cd6acdf0022c9 SHA-256: ed8172aec3503d1b877549edac21a3220f0a148b2a3695fc9a11d38033c38fd6
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://trafffi.ru/123?keyword=tracing+the+heart+worksheets PDF link annotation
    • https://nukewixe.weebly.com/uploads/1/3/4/3/134385223/wofojitamerunolag.pdfIn PDF document text
    • https://nutefowamedez.weebly.com/uploads/1/3/4/3/134330341/zakikuleka-nukavapegep-nuwaguna-doxawovare.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378167/normal_5f915a56b6ff7.pdfIn PDF document text
    • https://tubenuluni.weebly.com/uploads/1/3/1/4/131437864/9898247.pdfIn PDF document text
    • https://mimoberojatef.weebly.com/uploads/1/3/4/3/134316463/69ac9a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/fidefofudi/dorukanirowuv.pdfIn PDF document text
    • https://s3.amazonaws.com/tuzamada/39878267087.pdfIn PDF document text
    • https://s3.amazonaws.com/tazibabebamep/52338694490.pdfIn PDF document text
    • https://s3.amazonaws.com/betimugi/24677829359.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/71106044750.pdfIn PDF document text
    • https://s3.amazonaws.com/gurowozenupifi/tower_bioreactor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b96f494-e179-4862-a263-29174191581d/64614588730.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_off00004717.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4717 4924 bytes
SHA-256: 7c93b562a703dfa0ebf7465292e3e2a96dd687dc7cd0e642fcb55d0a9fdeafa7
font_01_sfnt_off000057d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57D4 9344 bytes
SHA-256: 25be17332ca315a1add43092d3f9e42be68a96a7674c86f4f12af2b0ad33301c
font_02_sfnt_off000077bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77BC 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361