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 a link farm hosted on Shopify. One of the primary links directs to a known malicious redirector at 'ttraff.ru'. The ML classifier strongly indicated maliciousness, and the heuristic firings confirm the presence of malicious redirector links and a link farm designed to manipulate search engine results. The document body itself appears to be obfuscated or corrupted, but the presence of the URL 'https://ttraff.ru/pify?keyword=soluciones+practicas+bernardo+stamateas+pdf+gratis' suggests a lure related to finding free PDF books.
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=soluciones+practicas+bernardo+stamateas+pdf+gratis In PDF document text
- http://files.greatwesternco.net/uploads/1/3/0/7/130739456/1782608.pdfIn PDF document text
- http://lamabifaj.authorcaseybell.com/uploads/1/3/0/8/130874330/46b931fc7f.pdfIn PDF document text
- http://files.olevelsciencetuition.com/uploads/1/3/0/8/130873810/pobuxiladebonajej.pdfIn PDF document text
- http://files.olyhp.com/uploads/1/3/1/3/131383514/7bc0da3eb0b.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/1/0433/5671/7207/files/rapujexewuzajumofokowita.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/2075/3823/files/kevegudufatajerupoka.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/8679/1334/files/photography_company_profile_sample.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/1917/9931/files/8299327606.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/6739/9575/files/modern_chemistry_textbook_holt.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/9846/4661/files/tojojixiwu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/7194/6398/files/nefiwu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/8480/7334/files/mathematical_modelling_examples.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/9197/5580/files/85520221603.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/4003/7271/files/ramovarob.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/6854/5441/files/39310783329.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/6868/5464/files/97723618054.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/6135/4389/files/bekegulewadudarexujobo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/3761/3461/files/72745285179.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_off00005d81.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5D81 | 5600 bytes |
SHA-256: c41d516430c0cf367ea7897fd9964ed789327990db2a582aae3fb392a4726ecd |
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font_01_sfnt_off0000705d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x705D | 11936 bytes |
SHA-256: 8dff77359a35933a91047cd0dcebfe6f757a482ce13ee4a81ff2143257d54e9e |
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font_02_sfnt_off00009749.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9749 | 4324 bytes |
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176 |
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