Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca6b2128e0ea871a…

MALICIOUS

PDF

41.4 KB Created: 2020-10-10 10:47:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: aa6753245f5cc7f2570f8fe47269f34b SHA-1: ff32c5f520bd1b4a6d0b09dbbda3276a111c0c10 SHA-256: ca6b2128e0ea871a7ff9dfad1260b05575a34a57899aa311af58206bbec6e0cb
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://cctraff.ru/strik?keyword=flight+radar+24+apk+full+download In PDF document text
    • http://files.isr-academy.com/uploads/1/3/1/4/131452801/29309c60f507e.pdfIn PDF document text
    • http://xorok.handhills.ab.ca/uploads/1/3/2/6/132695569/04b3eec07.pdfIn PDF document text
    • http://files.meredithodekirkabroad.com/uploads/1/3/0/7/130775934/nedog_bevipalunureb.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000064df.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000064df.bin)
    • https://cdn.shopify.com/s/files/1/0433/9797/2135/files/kusajikil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/4989/3026/files/small_scale_lab_paper_chromatography_of_food_dyes_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/9067/4591/files/zofunusudisusotupunevu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3768/5920/files/inn_at_queen_anne_parking.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/8192/7318/files/secondary_brand_associations_of_apple.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/9701/7506/files/96138122265.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/5097/1548/files/63598452106.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4975/2478/files/voxiwofose.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c827bb4d-13c2-48ab-906e-8b85688b0ee5/1506213144.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4223fc37-9e2f-42c1-baab-354679baf27d/26279786855.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_off000064df.bin)

Related samples 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000064df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64DF 5456 bytes
SHA-256: 32f6e928dd2244c9c6d37910219b8ceeae39bc2250b37b0f1f97a15878f74d49
font_01_sfnt_off00007788.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7788 9816 bytes
SHA-256: 48ef2da0b0f2d07c5ec6c3eac2f87c5b3a517cabfb3bdbd6476c4ff02cbd3766

Open this report in the interactive analyzer, or submit your own file for analysis.