MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous external links, many of which point to SEO redirectors or potentially malicious content, as indicated by the 'PDF_SEO_LINK_FARM' and 'PDF_SEO_UTM_REDIRECTOR_LINK' heuristics. The primary malicious URL identified is 'https://nipis.ru/strik?utm_term=help+with+amazon+fire+stick+remote'. While no scripts were explicitly extracted, the presence of embedded URLs and the ML classifier's high confidence score suggest a malicious intent, likely related to phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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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External URI info PDF_URIPDF contains an external URL action
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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://nipisod.ru/strik?utm_term=help+with+amazon+fire+stick+remote PDF link annotation
- https://cdn-cms.f-static.net/uploads/4480736/normal_606a7e0ba0d1f.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4427499/normal_5fdd5cd1ddec6.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4454822/normal_6011a1e4e6837.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4406473/normal_6000bd4c7ecc6.pdfIn PDF document text
- https://lulofaki.weebly.com/uploads/1/3/1/4/131453598/sezataganiv.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4457570/normal_5fc934c38f473.pdfIn PDF document text
- https://vuzufakafedovi.weebly.com/uploads/1/3/5/3/135347170/fijun-kewujiwow-nalukukufeb-walalarowefaw.pdfIn PDF document text
- https://javesuput.weebly.com/uploads/1/3/0/8/130873829/larigedujini-nuxutit-belofovajenimop.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4375095/normal_600595e3d0fbe.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4393186/normal_6030181767f25.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4447079/normal_6002ae7fe34e3.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4489846/normal_5fe2acaa2dc46.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/9a65cdc6-0f68-4a8d-85e2-3df3d01a01d6/57239304043.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/5f6dbe53-b969-4277-96b1-bfa4e5f9ce1d/33185397036.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b5c4e981-552a-42c4-8081-51e3d4f6af5d/firefly_flight_schedule_2019.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/87735670-2844-48ca-8354-3ad255b351c0/baby_trend_sit_n_stand_shopper_stroller_reviews.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/cb8fbc5c-f66c-460a-ba25-4822c54b2ac4/49004288281.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/4af5cf4b-0cd3-4b11-befc-85a6668a5c4f/diary_of_a_wimpy_kid_new_book_14_release_date.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/50875ef0-892b-4f33-838c-5f2aa9287fb5/how_to_use_sandisk_flash_drive.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/ae424a87-fb25-401b-abe9-12bfb4ba3980/ejercicios_de_balanceo_por_tanteo_resueltos.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/0d7600e2-19c9-44c1-a389-804d737cc47f/are_kenmore_washers_still_available.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_off0000f05b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF05B | 5424 bytes |
SHA-256: 7617608e2c58a0b862dca862088e7e55bc290b12b532aadc5ee4314c099ad60b |
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font_01_sfnt_off000102bb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x102BB | 11072 bytes |
SHA-256: 9139057ec0d65e121b20b920f25cc6b8e830a93880692921fa3b6ab5597ce3b1 |
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