Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1cd8359595c156c…

MALICIOUS

PDF

42.8 KB Created: 2020-08-02 06:16:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9e24692a26c00830a9f74cc08e3c1a93 SHA-1: 266b5673216930a8b20ec05ccbaf6b863013149c SHA-256: c1cd8359595c156c7cc7bfc59d7462d86b4d3e88f57c80b0a6d182e32d9d5c4d
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one identified as a malicious redirector. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically flags the URL 'https://ttraff.com/pify?keyword=salem%2527+s+lot+2004' as pointing to known malicious infrastructure. Additionally, the PDF_SEO_LINK_FARM heuristic indicates a large number of external links, suggesting an attempt to manipulate search engine results or distribute content widely. The ML_NYX_PDF_MALICIOUS classifier strongly supports the malicious nature of this PDF. The document body contains garbled text but includes the malicious URL, reinforcing its role as a lure.

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.com/pify?keyword=salem%2527+s+lot+2004 In PDF document text
    • http://files.rachelchristofferson.com/uploads/1/3/1/3/131381772/ae127e9fd2.pdfIn PDF document text
    • http://files.capehornvet.com/uploads/1/3/1/3/131383342/sigovaxutoruvaduze.pdfIn PDF document text
    • http://files.keebskorner.com/uploads/1/3/1/4/131454012/vuxibonoxuw_pevivigi.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/1/0430/3906/4225/files/xuwij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5314/6517/files/64020835982.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0421/3917/files/indiana_cdl_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7978/5886/files/tudefuxezekego.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7133/1742/files/84512901875.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7090/5756/files/php_reverse_shell_one_liner.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8038/4674/files/rabizuvawena.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8603/5621/files/66576735315.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8969/0773/files/gopebujegidobet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1325/0965/files/12291810444.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1133/2507/files/kopebavowabupodugurinop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2568/6951/files/4637674043.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 5

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_off00006a69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A69 5236 bytes
SHA-256: 4939dda6d600e2bf11ab054ed146fd458d26dc798938d7b167876458224d5880
font_01_sfnt_off00007c30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C30 10072 bytes
SHA-256: 437d30be8e297e4b6e266e75b182e023865e4e3b81c1aeb78e18ea09454faa39

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