Malicious PDF — malware analysis report

Static analysis result for SHA-256 45df8563de268e52…

MALICIOUS

PDF

62.8 KB Created: 2021-01-04 01:33:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: c8132aa6e5bc91a15ef652b8c136c7ae SHA-1: 74742eeced847b901802c18744e7bd5dc6993730 SHA-256: 45df8563de268e520dbe2f6333cdee17fdcaa8d340ee4c35b05e808b79a8c5e6
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffset.ru/shook?utm_term=real+steel+toys+midas PDF link annotation
    • https://cdn.sqhk.co/vozupowo/3hjjccn/6774154687.pdfIn PDF document text
    • https://cdn.sqhk.co/narulaloro/wNjghe2/13357311073.pdfIn PDF document text
    • https://cdn.sqhk.co/faruzikako/HP4gfjj/toddler_reward_chart_ideas.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375087/normal_5f99291336c9b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385020/normal_5f9ece879358d.pdfIn PDF document text
    • https://cdn.sqhk.co/xetasenuwoji/cijWjdb/healthy_milkshake_recipes_for_weight_loss.pdfIn PDF document text
    • https://cdn.sqhk.co/lizupasepafu/JjfIVnW/nusotuxodejonimaxup.pdfIn PDF document text
    • https://cdn.sqhk.co/surudije/qUOiahi/vogaku.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383160/normal_5fce449541001.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383146/normal_5fc1e874d1814.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392209/normal_5f8f98f27813b.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/3fdfb748-0baa-4cef-bb4d-ffdc19919efa/death_drop_dance_gif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e3c84f5-fe71-433a-9ab4-3122fb04a108/sagujaxosogerozare.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d949cd4-db32-4e73-b532-252c06d8e544/96643470503.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/150cf510-5422-42ac-9c22-c8972481036c/91040548950.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_off0000bbd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBBD7 4984 bytes
SHA-256: 8283ef901c0f6ef4999162d2b6b29751197cae77f14bb0faf4e517b36d6f8709
font_01_sfnt_off0000ccc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCC6 9880 bytes
SHA-256: 97a808e2861021550c5f07ae1a473cb75c882703adde0a951d5cc795180425e9