Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d094bc4717ebc24…

MALICIOUS

PDF

54.0 KB Created: 2020-10-02 16:28:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 618025bd5d4f6b96e9f29a175751e730 SHA-1: 29e69369aa6d63a0202c6d43ead5d22e86459561 SHA-256: 7d094bc4717ebc247ded04f0f404e99d98fa9125f865b3135bebfbc8539f29ff
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://cctraff.ru/strik?keyword=empowered+evocation+scorching+ray In PDF document text
    • http://files.upperteesdale.org/uploads/1/3/1/3/131384442/63e98a83bcf.pdfIn PDF document text
    • http://files.auroraleatherware.com/uploads/1/3/1/4/131407552/4520775.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5366/8769/files/38061194036.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1187/4716/files/apush_1898-1938_study_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/1834/2559/files/94743410441.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8732/1505/files/73747349813.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/9970/1406/files/chester_law_group_akron_ohio_fax_number.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7113/6154/files/pokemon_drawing_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6638/2749/files/fikorikanepiriju.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98704ba2-307c-472c-9b46-9ac9637b500d/28342805736.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c966f9e-f14e-4314-818f-8f90b80948ac/pumomopora.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/533338af-680e-4152-a155-de62804f35fd/76407994806.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f4f28bf-9f20-478b-81f0-a9f8983ed3b1/15994315773.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2746e6bb-2dd3-4c18-b395-a4eb1aaa76fc/tugatevulisigixu.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_off0000956d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x956D 5668 bytes
SHA-256: d2bb1bccdb2e5f511ff0913e4c8f714fa5f1a2827bcab76fee7c7ff24bc015f9
font_01_sfnt_off0000a8a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA8A3 10060 bytes
SHA-256: e6331695ea938e533c5912af6ac6a3bdde39e4bb34db3a6b679b834f23f61e65