MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains numerous embedded links, including a critical redirector link to ttraff.cc, suggesting a lure for users seeking free technical documents. The ML classifier strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the primary malicious URL and a list of other Shopify-hosted PDF links, likely part of a link farm to improve search engine ranking for malicious content.
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.cc/wb?keyword=engineering%20thermodynamics%20pk%20nag%20pdf%20free%20download In PDF document text
- http://files.immaculataschool.org/uploads/1/3/0/8/130813988/76ab218c2.pdfIn PDF document text
- http://files.gotechsfl.com/uploads/1/3/1/4/131453302/taxevozuwokibap-miwuxowajoda-fetuba-mabuve.pdfIn PDF document text
- http://files.cunctor.com/uploads/1/3/1/3/131380773/tudejuguvedaxem_basasobeb_fotefejeporifi_nelefogu.pdfIn PDF document text
- http://files.jachristensen-maker.com/uploads/1/3/1/4/131408204/8420523.pdfIn PDF document text
- http://jeromi.elenasuglia.com/uploads/1/3/1/6/131606490/5b24efd0be.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/1/0432/3124/8542/files/37404228039.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/7157/8024/files/27405074490.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/8580/7268/files/63003010924.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/7470/6853/files/puvobefimomutonegulofo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/7634/6266/files/sevolusefixa.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/9853/0201/files/anganwadi_up_form.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/4691/9579/files/bases_de_datos_en_excel.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/8750/4294/files/vajifivukuj.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/7252/0353/files/79532286970.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/4949/2384/files/routledge_handbook_of_ecological_economics_nature_and_society.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/7091/4717/files/70845830436.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_off00005536.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5536 | 5784 bytes |
SHA-256: 02d82992ccafd299538005d9bd74917d5ee6d45f01c8f2c56f41ed3c5963b27c |
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font_01_sfnt_off000068cb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x68CB | 2116 bytes |
SHA-256: 33d80b5e357abfa3ea91f5eff18928953f8e36d8e9a7aea158c838e8ae756dd9 |
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font_02_sfnt_off00007295.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7295 | 10204 bytes |
SHA-256: 9a4b551b66edd032cdff31c72b61b86c1daa88cd8548d1fb3c2ead99ad74a3bf |
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