Malicious PDF — malware analysis report

Static analysis result for SHA-256 48a8f3201fabec8c…

MALICIOUS

PDF

39.6 KB Created: 2020-10-03 10:46:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: c86899fd3815e5ea8f99ed0c67ef6bab SHA-1: b633e4bfb2a9294f68e63b2ba889fd4ef3b2e9e7 SHA-256: 48a8f3201fabec8c5d1c4e16527e0bc692a006b63eb05dd9a1d8ec7a9dcae305
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://gettraff.ru/strik?keyword=server+error+occurred+restart+camera In PDF document text
    • http://susejakav.recraftindy.com/uploads/1/3/2/3/132303079/guvuvososex_wozirixu_kisupejuwib_dikawadeguva.pdfIn PDF document text
    • http://files.liferestorationpartners.com/uploads/1/3/2/7/132741385/zogugapuwepopejosogo.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/21479898-e901-4943-8ce6-04a07f4c469d/32658574515.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2bbfe962-4dc3-48ab-baf6-894b1007a96a/78382506141.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ecd2642-c9f1-4e6e-a62d-e36c488bb0c7/gujebalujuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7731/2411/files/53652683992.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64f67afb-0329-4c28-a304-021fe56c59bf/lesomadusemij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2489e2b-fd04-422a-a04f-31bc89437348/58190604238.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f9ec1bf-a592-4d0c-9b3e-e34ee0bc2536/navuviluvupa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/056cc423-6190-48b7-981a-332650e8f20a/felinomok.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_off00005ea0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EA0 5216 bytes
SHA-256: 37b41456dc579f33b255da11a345b056846a4efe0f3e4f69226b6a72cbb216e2
font_01_sfnt_off00007048.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7048 10164 bytes
SHA-256: abbf109800d8182eac28ada8be540c4df9e58c29b63cfd4e2c8876cf535d10e5