MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains a large number of embedded links, with one specifically identified as a malicious redirector. The document body is heavily obfuscated and appears to be junk data, but the presence of the malicious redirector URL and the mass of external links strongly suggests a phishing or malware distribution attempt. The primary malicious URL identified is https://ttraff.ru/pify?keyword=cae+revised+exam+2020+pdf.
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=cae+revised+exam+2020+pdf In PDF document text
- http://files.shioyacountryclub.com/uploads/1/3/1/6/131606815/jipofamevizi.pdfIn PDF document text
- http://files.egamposol.org/uploads/1/3/1/4/131452887/zulijogotifasi_kuwogutu_lanumuvuxobi.pdfIn PDF document text
- http://files.iyengaryogaojai.com/uploads/1/3/2/6/132695701/33edaecd9c22.pdfIn PDF document text
- http://files.angelahokeauthor.com/uploads/1/3/1/1/131164281/newedu.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/1/0436/3865/3081/files/fivutemubena.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/1960/7962/files/gojuz.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/1633/1172/files/this_is_us_s04e14_torrent.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/3138/6517/files/statistical_inference_estimation.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0450/7284/2915/files/barron_s_toeic_7th_edition_free_download.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/99781003244.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/5199/9637/files/gijibonuwadawugiwimobeza.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/1588/9305/files/13236605504.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/6108/4314/files/79564238564.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/2398/3015/files/23186137135.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/8768/1952/files/36335001757.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/6730/9206/files/33210049183.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/1277/6351/files/62923832288.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0454/1009/1176/files/a_brief_history_of_time_new_edition.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/6991/3753/files/calidad_del_aire_definicion.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_off00005037.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5037 | 5464 bytes |
SHA-256: a6c3b8abab4d0185e3e412daad269d22e2a3bc24f726173f897bb05ac41cee85 |
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font_01_sfnt_off000062bb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x62BB | 14116 bytes |
SHA-256: 48e5ee559f33c956caea91b29a1593a53c1dbf0a374bf7c6b741640192636b6a |
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