MALICIOUS
202
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF file contains a prominent link that redirects to a malicious URL, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text related to 'Synonyms and antonyms pdf download' and the URL itself, suggesting a lure. The PDF_SEO_LINK_FARM heuristic indicates the PDF is part of a larger link farm, likely for SEO manipulation or to distribute malicious links. The SE_DOWNLOAD_BUTTON heuristic further supports the lure aspect.
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.com/pify?keyword=synonyms+and+antonyms+pdf+download In PDF document text
- http://files.thevamcommanders.com/uploads/1/3/0/7/130775623/8594934.pdfIn PDF document text
- http://files.densityanalytics.com/uploads/1/3/0/8/130814769/57a960d0c0.pdfIn PDF document text
- http://files.pandgdolls.net/uploads/1/3/1/4/131437319/1ef127.pdfIn PDF document text
- http://danuluv.karishmadonde.com/uploads/1/3/1/8/131871721/barafupa.pdfIn PDF document text
- http://files.artforhorses.com/uploads/1/3/1/3/131380894/6d3de7.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/1/0431/5650/4744/files/83684565252.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/8120/3861/files/xivupuzujigeregetume.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/9946/4611/files/14559288737.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/8904/3358/files/rowipewusalewewixugav.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/3251/8549/files/83796580568.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/4217/6150/files/73549554237.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9318/1095/files/fusionner_des_fichiers_en_un_seul_en_ligne.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/0335/5034/files/berikafa.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/1905/7822/files/2926190562.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/3011/7542/files/california_common_core_standards.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/7990/1096/files/turexumolojozatosuwiwobil.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/0452/5720/files/74397299734.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0926/9156/files/tekefa.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_off0000b660.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB660 | 5388 bytes |
SHA-256: 39a9e8b25cf1dcd15de2d1de623bf060f6fe8b6c94f4d582537c00aa39f3d9a1 |
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font_01_sfnt_off0000c8bf.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC8BF | 12788 bytes |
SHA-256: fe852cad8ea8788710f92288583019b5eda0115eae063bae3232680881d90182 |
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font_02_sfnt_off0000f173.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF173 | 8712 bytes |
SHA-256: 7878d9f1ac65c1877d87600920c4f78ac478ef4bb7ef2a84830e7f19ebd63375 |
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