Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa8d0389a9f0e0d8…

MALICIOUS

PDF

55.4 KB Created: 2020-10-13 10:13:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-06
MD5: c48cc432975b9a9d5233656e927d4a04 SHA-1: 2cbe390e0f15fbcf13537e96f1df626853f5ef87 SHA-256: aa8d0389a9f0e0d840ee469e5654052ce5d2daa2997c2ca9e81009525228f542
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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=czardas+piano+violin+pdf In PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/8276696.pdfIn PDF document text
    • https://fodezamu.weebly.com/uploads/1/3/1/4/131407453/e9ff54.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/vigirupiruwovilav.pdfIn PDF document text
    • https://dimaxafazeza.weebly.com/uploads/1/3/1/4/131453031/8767144.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/8536469.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/878bb837-2898-4394-9652-d406fa0c6b7d/45596500233.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c175f40f-a6ad-4c37-8481-74c15b65e4ee/89604538370.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa684343-c755-4e25-a35a-b70cd5a27416/nuvafojidimepixa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/10f702df-6544-45e9-b86b-8a209072cd63/koger.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3337/0522/files/dinejezuvewisino.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/9856/9381/files/lufigiwexunilo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/3632/2203/files/11368707604.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/5496/3109/files/frog_and_toad_together_stories.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9916/9964/files/83531085537.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000079f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79F7 5052 bytes
SHA-256: 0ac1757f965389e0a184e1c350f58fdc81779e4b30f56d2faeb1fa281ec40cd8
font_01_sfnt_off00008b46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B46 15404 bytes
SHA-256: 2068c66fdd66cb5af9197cc84c336714f72f776f6b23006f5f8b740e5e69a77e
font_02_sfnt_off0000bbf1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBBF1 16076 bytes
SHA-256: e2237bcfba2ad8a8c6238a86fe0fbf220db2b991d1f402b1dc0856d9f6c5f988

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