MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains numerous embedded links, with a critical heuristic firing indicating it links to known malicious redirector infrastructure. The primary malicious URL identified is https://ttraff.ru/pify?keyword=biafra+war+pdf. The document body, though heavily obfuscated, contains references to 'Biafra war pdf' and the wkhtmltopdf tool, suggesting a lure to disguise the malicious intent. The presence of a large number of external PDF links further supports a link farm or redirection attack pattern.
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=biafra+war+pdf In PDF document text
- http://lumuwegiv.kategrindon.com/uploads/1/3/1/3/131383949/vozugevibij.pdfIn PDF document text
- http://files.verduemedia.com/uploads/1/3/1/8/131871859/fujigagudutujotez.pdfIn PDF document text
- http://files.variablerateintercooling.com/uploads/1/3/1/3/131380870/7671165.pdfIn PDF document text
- http://files.carolvoss.com/uploads/1/3/0/7/130738484/keken.pdfIn PDF document text
- http://gefegu.poweroftheflowers.com/uploads/1/3/0/7/130775971/kexokusi-fotoripitapoxu-burunelifo-sisubale.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/1/0433/0687/7080/files/48880371243.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/5396/3678/files/ba_ii_plus_manual.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/5576/7967/files/34061375864.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/3934/1216/files/lebabipanimet.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/4777/8469/files/kamoripirovagogex.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/3638/5181/files/abnormal_psychology_9th.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/4090/5128/files/orthographic_projection.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/4273/4237/files/dujutamabuwojogun.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/6761/2067/files/runilusab.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/7210/2301/files/antony_and_cleopatra_analysis.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/8424/2337/files/62476037306.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/7548/5348/files/30278060624.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/7352/6178/files/66301343870.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_off00006572.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6572 | 4968 bytes |
SHA-256: 5b75d0a23d5f703ebf0d0c14df0dc7c145991603a988c19fe3aa0f214796cb66 |
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font_01_sfnt_off0000767d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x767D | 9892 bytes |
SHA-256: 2fe5ae233b069f85f23dbebcb85f7050cf40df73944e21854cc7025d603a2063 |
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