Malicious PDF — malware analysis report

Static analysis result for SHA-256 adcc8cbf1f023f26…

MALICIOUS

PDF

41.7 KB Created: 2020-08-05 15:09:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a0ce99be465826485500f18afc26fe1e SHA-1: c81a6949d6f707dc95b8013d11cb53f29450a3ab SHA-256: adcc8cbf1f023f26d4d9a12b7923c4a13ae5d7ae50179e97802e1b0885d8e597
194 Risk Score

Malware Insights

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

This PDF file contains a large number of external links, many of which point to other PDFs hosted on Shopify. One of these links, 'https://ttraff.ru/pify?keyword=centrosome+structure+and+function+pdf', is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting it is the primary lure. The presence of a malicious redirector indicates an attempt to lead the user to a harmful destination, likely for further exploitation or credential harvesting.

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.ru/pify?keyword=centrosome+structure+and+function+pdf In PDF document text
    • http://files.sapritalia.com/uploads/1/3/1/8/131857334/xidir_rawufakomexos_sewerade_pewefom.pdfIn PDF document text
    • http://files.authenticstonecreations.com/uploads/1/3/0/7/130740625/nudumajekuku.pdfIn PDF document text
    • http://files.onlineradioschool.com/uploads/1/3/2/6/132682974/1070f3a793.pdfIn PDF document text
    • http://files.fancysockfitness.com/uploads/1/3/1/0/131070820/tiboko_lipafonawudo.pdfIn PDF document text
    • http://files.gardensatunityvillage.org/uploads/1/3/1/4/131407051/xavifoso.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/1/0429/5829/1093/files/27780357261.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9746/4731/files/87155989766.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6141/8913/files/cairo_city_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3565/5335/files/apple_company_balance_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9986/5756/files/meaning_and_definition_of_cost_accounting.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9947/8434/files/buwefafarepanazepewojew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/4029/8392/files/jumefevusur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0225/7823/files/xoderolefasawugemobi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0659/0106/files/nemerar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6705/7063/files/36546336688.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/76957488457.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9571/8040/files/basic_commands_in_linux_terminal.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 8

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_off000065ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65EC 5172 bytes
SHA-256: 5c67072b0a312d0d333bbf6e73b43445f808ea2a341b0799c3532d6e3ba180b2
font_01_sfnt_off0000776a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x776A 10056 bytes
SHA-256: 79a98fe694970ec101aa1aa2b8520b3c8d637d9f83bdc45bcd150f854c8164e2

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