Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf32a508bfd4a1a5…

MALICIOUS

PDF

41.1 KB Created: 2020-08-25 09:04:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 074df73b691c90c3394baa428d1f315b SHA-1: 15d936387818acfd4d362aa1119b4280f88ede12 SHA-256: cf32a508bfd4a1a5c3029f819ac1711687d66de13ae8b878a7b632c6c4bac0b6
194 Risk Score

Malware Insights

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

The PDF contains a link farm and a direct link to a known malicious redirector, indicating an attempt to lead the user to malicious infrastructure. The document body, though heavily obfuscated, contains text related to 'insulated roof sheets' and the malicious URL, suggesting a lure. The presence of numerous external PDF links, many hosted on Shopify, further supports the SEO-based link farm heuristic.

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=insulated+roof+sheets+tile+effect In PDF document text
    • http://files.wisdomforwarriors.com/uploads/1/3/0/8/130814980/4aae0c8efeeecc8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0448/4320/4765/files/couper_un_par_page.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ruwofejimu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4716/5850/files/muniro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2344/8736/files/87999680635.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2324/5216/files/tamopamiluxapudatamop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7439/6065/files/xelewizu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/9393/3477/files/96616938933.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2745/5387/files/zukogimomodomusa.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 2

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000054a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54A1 4928 bytes
SHA-256: 0809638c567a10141ea46ab147792f4e46f7a6e4bd311d2b76fe94b24b97f287
font_01_sfnt_off0000654c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x654C 10752 bytes
SHA-256: c64b7a358e053c6c4e4a07808d5745eb57c3bc7c15668dff809d8fc5b25fc7aa
font_02_sfnt_off000089e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89E6 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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