MALICIOUS
202
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a prominent link that redirects to a known malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. This link is presented as a download for academic papers, leveraging the SE_DOWNLOAD_BUTTON heuristic. The PDF_SEO_LINK_FARM heuristic indicates the document is part of a larger network of similar PDFs designed to manipulate search engine results and drive traffic to potentially malicious sites. The primary malicious IOC is the redirector URL.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 6
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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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=apcob+previous+papers+pdf+download In PDF document text
- http://jewipa.gregstarnesauthor.com/uploads/1/3/1/4/131453109/ditakugimunewobikan.pdfIn PDF document text
- http://files.marcodim.com/uploads/1/3/0/7/130740112/ffda9e686c23b.pdfIn PDF document text
- http://files.othellorodeo.com/uploads/1/3/1/4/131454420/dawuwudomakulag_mejominu_neduxipupizupig_gasetitebuvi.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://fedorahosted.org/lohitIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/4291/2926/files/10760507803.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/6151/8231/files/38605382240.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/2489/8453/files/59344588120.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/3891/4213/files/xurizegewaruxe.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5732/3925/files/19842513225.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/8714/8709/files/rimipoxetit.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/7341/3032/files/71286249939.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/8972/9438/files/munaripudopagilud.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/3115/8175/files/b1_english_grammar_exam.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/8684/7903/files/vovogofuforilo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/2765/9932/files/effect_of_water_pollution_on_human_life.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
🗂 Part of campaign:
deepriveras.com
3 samples
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00005ad0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5AD0 | 5428 bytes |
SHA-256: 14c5c8b657165d7f381b1028e26287d505c2fe92be71a5112b83b60b4412ac60 |
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font_01_sfnt_off00006d62.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6D62 | 2568 bytes |
SHA-256: 9d78c954f3866fd3373a749a9fc14b1612e81edb49db85021891d298e9142b6c |
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font_02_sfnt_off000078a7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x78A7 | 10404 bytes |
SHA-256: 968de8333a302c1046a0bae73714589228c7864db8ba680ec4627225d83e0033 |
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