Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9db0bdc802d2a90…

MALICIOUS

PDF

49.3 KB Created: 2020-10-25 03:26:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 2516bb826f2489435d0edaf3fc238490 SHA-1: b7996e306e398f4fcdcebeb0ad92a2a0e2f02205 SHA-256: f9db0bdc802d2a909c67b57f4610248d8a192c9932f48a91c87463dabff00b28
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://ttraff.link/aws?keyword=fish+canning+process+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4371536/normal_5f943be297142.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385415/normal_5f8d4d49a1937.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366653/normal_5f900226510c7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374983/normal_5f90f298b41c4.pdfIn PDF document text
    • https://tanifovekula.weebly.com/uploads/1/3/1/3/131379991/9911025.pdfIn PDF document text
    • https://nofakefol.weebly.com/uploads/1/3/4/3/134341926/4306554.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00008149.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00008149.bin)
    • https://cdn.shopify.com/s/files/1/0501/6656/2966/files/43914774135.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/0696/6947/files/mandell_infectious_disease.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8199/0293/files/89191069645.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/1756/7895/files/kekomuzizavajilawazixu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50dc85fd-40ba-4b48-99fb-ca074f3f5972/technics_sl_qd33_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af45488a-a30e-4cd1-8fd8-0a8f3cf3c652/kenmore_elite_oasis_washer_troubleshooting_ul.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f489626-b6c1-4dab-9a4b-7f95a1b17717/complment__100_ce2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec445434-7c95-41b9-8813-ac489b0cdea1/79962646148.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22ca45b3-1a8e-468f-932a-231a2774fc75/nuwigasotigupisibagiko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/9438/9151/files/introduction_to_stata_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/9605/5202/files/download_canoscan_lide_100_on-screen_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/7523/2452/files/1934957598.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/7909/3409/files/kindle_acepta_formato.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/4999/1330/files/xinutexakiwijewe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/3106/9340/files/kuxiwinujexipi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5536/3734/files/sasapoxowifotimewubipimeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/2854/7237/files/9368188524.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 extracted file (font_00_sfnt_off00008149.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008149.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8149 5340 bytes
SHA-256: 1258c1bf35c6eb0cc7e358a0108d7d4144dcf878489d1cdd5957235abdda30c7
font_01_sfnt_off00009379.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9379 10896 bytes
SHA-256: 2c644def74c98e5996f91e2c6b92c276429c3ae87f8d05154997bbd27c68ab38