Malicious PDF — malware analysis report

Static analysis result for SHA-256 a02c8f0d740ba1f4…

MALICIOUS

PDF

41.5 KB Created: 2020-08-12 14:49:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bacc522d2256337ed2b4b49ecb69ac16 SHA-1: 6725e8f57030a616436f7fe2e662ea65a1651112 SHA-256: a02c8f0d740ba1f4e4c1b2e7346092e5ce7ee33912121d745226fbab2c4a0d64
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF contains a large number of embedded links, many pointing to Shopify domains but also including a critical link to a known malicious redirector at 'ttraff.com'. This indicates a likely SEO-based link farm or phishing lure designed to redirect users to malicious content. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded links are the primary indicators of malicious intent.

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=patron+burda+pdf+gratuit In PDF document text
    • http://files.chickskicksboots.com/uploads/1/3/1/6/131606431/jonefororukikotebofo.pdfIn PDF document text
    • http://vaxofi.thebiocompatibledentist.com/uploads/1/3/0/9/130969060/6760477.pdfIn PDF document text
    • http://files.footballinmyblood.com/uploads/1/3/2/6/132695454/zakirexubo.pdfIn PDF document text
    • http://nuduj.designmindcreates.com/uploads/1/3/1/4/131483068/7623282.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/1/0436/1306/1277/files/robavonereti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8034/3967/files/bsc_maths_syllabus_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9455/6324/files/98754847267.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6041/0006/files/74212265135.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4856/6941/files/capitalismo_salvaje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3459/0888/files/99383921385.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0545/1174/files/12460679771.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9823/4270/files/tomor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7689/4372/files/71762202141.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4526/5312/files/numuvopatilegabavo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8841/9741/files/23070088454.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7378/1416/files/fepokelisugokiwepav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5064/8223/files/newopigawu.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 7

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_off00005fac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FAC 5140 bytes
SHA-256: 9afcc23280480786e93937ceacce3bd73a03505218a24eaaf86d7763d99835ea
font_01_sfnt_off00007130.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7130 12376 bytes
SHA-256: 1a2bbdb9fdbf70442859276cef74303cdc030c9e964347939997df374dfec087

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