Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc873260dc2728b2…

MALICIOUS

PDF

41.9 KB Created: 2020-08-18 23:22:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 96848c194bfd4a4e1300025646bf669f SHA-1: 313e89d6048938a128134fd1d34a5eb14e78938c SHA-256: cc873260dc2728b2442004d9c6fbabbcfc71e881dbc76fce7465e9cc7f64d3ec
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, a technique often used for SEO poisoning or to direct users to malicious sites. One of the links points to a known malicious redirector, and the document body contains text related to 'eucalyptus origins sheets' which may be a lure. The file's structure and link farm suggest a phishing or redirection attack.

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.cc/pify?keyword=eucalyptus+origins+sheets+full+size In PDF document text
    • http://pufojike.hockeyatlas.net/uploads/1/3/0/7/130739061/fcdf779.pdfIn PDF document text
    • http://nidoje.redemptivedivorce.com/uploads/1/3/1/4/131407227/7105705.pdfIn PDF document text
    • http://files.flagshipduluth.shop/uploads/1/3/1/3/131383325/fizir-rusudepiraze-seniwonov.pdfIn PDF document text
    • http://files.tennisstoreexpress.com/uploads/1/3/0/7/130775402/183576bb6172382.pdfIn PDF document text
    • http://files.thehomoeopathicpractice.co.uk/uploads/1/3/0/7/130775934/cca1c4fde366345.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/1/0430/9454/0452/files/femoxalo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2530/0647/files/55138856458.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4712/4130/files/edtpa_templates_2019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3375/4773/files/montage_of_heck_full_movie.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8078/5823/files/89534035899.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6077/1481/files/libros_de_ciencia_ficcion_en_ingles.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3103/6053/files/banikexiposenolasarewik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2931/4206/files/3082422086.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4952/5149/files/aparato_digestivo_completo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2718/5309/files/guretetozumamuteveruz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7289/6672/files/foduwemapipisuratolizo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7901/5327/files/counter_strike_global_offensive_rate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6467/1909/files/7678302355.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1663/2992/files/analgesico_opioides.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_off00006347.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6347 5384 bytes
SHA-256: ced0f0f9750846f18b50234ee7cb64a2ebc59500ec2c66a738aa3c2035046fae
font_01_sfnt_off000075a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75A6 10860 bytes
SHA-256: 3d582a0c56a41af7bf90a05f79940963a9528559bbe3eab114866a1b18b7c15f