MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains embedded links designed to redirect users to malicious infrastructure, specifically identified by the heuristic PDF_MALICIOUS_REDIRECTOR_LINK. The document body, though heavily obfuscated, contains the URL https://ttraff.ru/pify?keyword=biology+advanced+level+notes+pdf, which is flagged as a malicious redirector. The presence of numerous other PDF links suggests a link farm or SEO poisoning attempt to distribute 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.ru/pify?keyword=biology+advanced+level+notes+pdf In PDF document text
- http://files.campbellscostarica.com/uploads/1/3/1/3/131383319/titewenamaz-bolezujiwis-widinote-sofavusalas.pdfIn PDF document text
- http://files.3brothersforacure.org/uploads/1/3/0/7/130740138/8433652.pdfIn PDF document text
- http://files.lifelonglearningpath.com/uploads/1/3/1/4/131437474/wifadozijubadugeba.pdfIn PDF document text
- http://files.thiottawa.org/uploads/1/3/1/1/131164125/doleminimunetud.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/1/0435/5971/4971/files/43009778707.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/5684/0350/files/67682212293.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/8140/9436/files/fusionner_plusieurs_document_en_un_seul.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/5170/3706/files/14709022714.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/9377/8837/files/foxemowoxovojuledinexata.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/9805/4558/files/62097645744.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/9046/0324/files/calculating_standard_deviation_and_variance.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/8298/7173/files/shunting_yard_algorithm.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/1095/6196/files/kazeguwibixopewafivi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/6540/8662/files/39292140685.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/4976/2459/files/vapikomofolipubakude.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/0962/1664/files/budget_2020_analysis_upsc.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/9800/3874/files/case_580_backhoe_operators_manual.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 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00009af4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9AF4 | 5440 bytes |
SHA-256: d70fc0cd5bf34a930c701c14890ebb3264314cb3dca52f8f347be0c27b7c0e6b |
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font_01_sfnt_off0000ada1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xADA1 | 10152 bytes |
SHA-256: d34fbb741040abd548a1b94b3b12932077001fbd97360110da543fc6ecc63453 |
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