MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a large number of embedded links, many of which point to external PDF files hosted on Shopify. This is indicative of an SEO link farm, a technique used to artificially inflate search engine rankings for malicious content. One of the embedded URLs, 'https://ttraff.com/pify?keyword=ksi%25C4%2585%25C5%25BCki+po+angielsku+dla+pocz%25C4%2585tkuj%25C4%2585cych+pdf', is flagged as a malicious redirector. The document body itself is heavily obfuscated but contains references to the same URL and the wkhtmltopdf tool, suggesting it was generated programmatically.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 5
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PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINKPDF 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.
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Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARMSmall 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.
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Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINKPDF 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.
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe 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.
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Embedded URL info EMBEDDED_URLOne 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=ksi%25C4%2585%25C5%25BCki+po+angielsku+dla+pocz%25C4%2585tkuj%25C4%2585cych+pdf In PDF document text
- http://files.krakauertaggduo.com/uploads/1/3/0/7/130740517/jizenuvawif-nuwofiba.pdfIn PDF document text
- http://xewepol.morrisrental.com/uploads/1/3/2/3/132303382/giteviwu.pdfIn PDF document text
- http://tabab.speedandsprocket.com/uploads/1/3/1/8/131856185/tuwasaruxulu-laxopupil-miveporasenijif.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/1/0433/1126/7990/files/bavawag.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/2837/2904/files/knee_exercises_for_arthritis.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/2657/9610/files/96973275015.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/6395/1003/files/gedaroropukoturodubome.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/5863/3631/files/hackerrank_questions_and_answers.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/8890/3325/files/29750053400.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/7895/9775/files/81057411622.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/7186/4993/files/pofabelede.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/6065/8333/files/98654436825.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/7950/5822/files/48599779700.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9508/1625/files/clasicismo_griego.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/5239/9777/files/ligupaxipoz.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/4143/8366/files/32844881521.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
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00006443.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6443 | 5800 bytes |
SHA-256: 17e133140f18a240b7fbc4109bac42d1a655c0e944a62747232786f35647f661 |
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font_01_sfnt_off00007766.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7766 | 11188 bytes |
SHA-256: 6172175b3cf6ce8d4eab4067486351931a82498accc9672c8c0dce2bf7a17df6 |
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font_02_sfnt_off00009ad0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9AD0 | 4324 bytes |
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361 |
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