Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccf5c028aed71ae1…

MALICIOUS

PDF

114.8 KB Created: 2020-08-07 01:19:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8279298f72e95b90340e75d1a655e29a SHA-1: 5ce85e7f05672d66efadd56e0a20984db151977d SHA-256: ccf5c028aed71ae1d6b0b23ea5859c020ccc00edec16d6cc9d0a56449ea97ddc
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains embedded links, one of which points to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'Cisco catalyst 3650 series switches data sheet pdf', suggesting a lure to entice users to click the malicious link. The PDF_MALICIOUS_REDIRECTOR_LINK heuristic confirms the presence of a link to malicious infrastructure.

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=cisco+catalyst+3650+series+switches+data+sheet+pdf In PDF document text
    • http://tumivex.fccdks.org/uploads/1/3/0/8/130874620/bopuko_tirilezuvabe.pdfIn PDF document text
    • http://files.sylrossi.com/uploads/1/3/2/6/132683181/kugosijudosop-tezuvokuj.pdfIn PDF document text
    • http://files.maniacgirls.com/uploads/1/3/1/6/131606069/80abde3c8c.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/1/0435/4048/0164/files/52621623786.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/0391/5933/files/baciloscopia_que_es.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8857/6661/files/xofufujatukuwelisaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8476/6620/files/16813967733.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8865/7049/files/91319614566.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1471/5549/files/chakras_el_viaje_del_heroe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5157/3657/files/zomenivako.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3945/7431/files/pufolor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3215/8116/files/14586756116.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4769/7049/files/9506146316.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9019/0248/files/35786737721.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1035/1513/files/16245873828.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

Related samples 6

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_off00017354.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17354 5928 bytes
SHA-256: 7f06721e71365a2d37c868d361a36cd9721e5167fdee48e14efb2f11e60713a2
font_01_sfnt_off0001878b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1878B 17532 bytes
SHA-256: f1e68e08b600cd4af69bbd68d0489b9e88f0808051372f9fc210276995130dc5

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