MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains multiple embedded links, with a critical heuristic firing indicating it links to known malicious redirector infrastructure. The document body also contains a URL that appears to be the initial lure. The primary malicious URL identified is ttraff.ru, which redirects to a page related to 'apostila para auditor fiscal da receita federal pdf'. This suggests a phishing or scam attempt using a lure document.
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=apostila+para+auditor+fiscal+da+receita+federal+pdf In PDF document text
- http://files.columsands.com/uploads/1/3/1/8/131871852/jifatafalen.pdfIn PDF document text
- http://files.washington-scottish.com/uploads/1/3/0/8/130874318/8b0f395751b7b3.pdfIn PDF document text
- http://files.eidia.com/uploads/1/3/1/8/131871952/fugevemimofupana.pdfIn PDF document text
- http://files.lorettacrogersnovels.com/uploads/1/3/2/7/132711970/bezufi.pdfIn PDF document text
- http://files.abodobusinesssolutions.com/uploads/1/3/0/9/130969681/gezopobobujija.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/1/0428/6647/5174/files/genatesufapudofipina.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/0785/9096/files/plus_or_minus_alt_code.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/9622/0572/files/zevesobivozevek.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/6197/8023/files/lasegibazavusuwefi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/6636/7895/files/bleach_season_4_episode_1.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/4677/3660/files/50006937467.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/3975/0294/files/nosomegalekajozopufidiw.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/8956/7650/files/42663119098.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/3253/4440/files/19262189409.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/7679/7081/files/6575857831.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/1737/1797/files/puvefe.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0664/7717/files/7934438377.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0723/7531/files/pevobo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/7955/7529/files/8673113115.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_off0000716b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x716B | 5140 bytes |
SHA-256: 0d8b9890b6ff8ae8aff9dc5776cef0826e433d99d48bab743f5bd8341480214a |
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font_01_sfnt_off000082f8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x82F8 | 10920 bytes |
SHA-256: 8ba56cbe0ecfe1112252b50dc65270205c348578a14d86f060b82fcf9a616d00 |
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