Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9a8185edde641b7…

MALICIOUS

PDF

41.9 KB Created: 2020-08-18 19:16:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3019ac8b5119788ff384b898a60b3e87 SHA-1: badaabd1d098d07ba3e7957ec14593068334e977 SHA-256: d9a8185edde641b7fc1e0ec1d8a61347cadd50fb491148b3a174254e15217afd
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is designed to lure users to malicious sites. The document body, though heavily obfuscated, contains the URL and a title suggesting a lure for a "car service check sheet pdf". The presence of numerous embedded links, many pointing to Shopify domains, further indicates a link farm or redirection strategy. The ML classifier strongly flagged this PDF as malicious.

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=car+service+check+sheet+pdf In PDF document text
    • http://files.mindfulmotive.com/uploads/1/3/1/4/131482916/9bbb9aaccd09.pdfIn PDF document text
    • http://files.bullbearkidsbooks.com/uploads/1/3/2/6/132681404/medewesiposade.pdfIn PDF document text
    • http://files.bulldogexotics.com/uploads/1/3/0/8/130874075/pemaroluxipiner-puzituna-lusakusis-guwipisum.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/1/0432/5697/1432/files/wavizisutimoto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xokuwunojuvilil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9535/0684/files/44685212485.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4445/2005/files/francis_bacon_essays.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5004/9448/files/maronu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4300/4322/files/munobexolumunokizoda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5911/6182/files/properties_of_2d_shapes_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0913/8084/files/13066386045.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_off0000687e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x687E 5240 bytes
SHA-256: a3d7f73da442a8aeee4a986fd7b101924d8461274a30efb5eb5d3ac093b1a084
font_01_sfnt_off00007a4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A4E 9620 bytes
SHA-256: 84b4e68d999ea4e6234d57c5a5df32c6066b6cb345d99a7557db24e628dfb095

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