Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b1122e464308461…

MALICIOUS

PDF

41.0 KB Created: 2020-10-14 11:00:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 7fe5c3c89a6472fb51931baddea7caa0 SHA-1: 2821101d67474b17bb998d8d9a3c8d1fef59aeaa SHA-256: 8b1122e464308461637fc965ebb24a65ec393ee95f88366b87bfb8cf2f735329
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=witchwood+monster+hunt+tess+guide In PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/987b21c6b.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/7d7b6617ab8.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/1158663.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/jibepare-vudaramuzi-refirezagulele.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/1/0479/0380/1510/files/wugik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2831/5293/files/xumabezikatetozetuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/4227/8042/files/zoxilijazubudada.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/1238/5700/files/gaylord_sheppard_2015.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7740feb-b7e2-4d99-a614-258e6f395359/koxobuzutakako.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f213183a-6d00-42ea-a33c-9425f5da58d4/semikuvi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2855c46-d0ac-4855-a1ad-0ccb13251234/46793437857.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fbec58b7-0df1-41a4-9ca3-b4c0d32ab51f/89665566488.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_off000064c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64C1 5216 bytes
SHA-256: 2bde7b8c0e43b115330abbd7675aaae8b51f0bee6ae1a5d75c58a8a43bd3d68a
font_01_sfnt_off0000766a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x766A 9700 bytes
SHA-256: 65ca387a2fa6328099d7ec3cfca9315da5e3330850afa3b562847374e11184a5