MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file contains numerous external links, many of which point to SEO-optimized URLs designed to appear as legitimate book downloads. The heuristic 'PDF_SEO_LINK_FARM' and 'PDF_SEO_UTM_REDIRECTOR_LINK' indicate a high volume of such links, with a primary redirector identified as https://xajibur.ru/award?keyword=entrepreneurship+books+pdf. The ML classifier and ClamAV detection strongly suggest malicious intent, likely 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://xajibur.ru/award?keyword=entrepreneurship+books+pdf PDF link annotation
- http://mif-smeh.space/90127256102guzhd.pdfIn PDF document text
- http://nudistoff.club/how_to_use_sunbeam_mixer_dough_hooke5wqv.pdfIn PDF document text
- http://4kuhd.me/can_i_download_microsoft_word_for_free_on_my_laptophq9ux.pdfIn PDF document text
- http://mnclassis.org/496215402032x4ui.pdfIn PDF document text
- http://buybritishcat.com/high_standard_sentinel_r-103_valueirk57.pdfIn PDF document text
- http://reduslim-shopofficial.site/dream_girlfriend_mod_apk_1._0._36e5zp3.pdfIn PDF document text
- http://appeal-ig.com/double_crochet_stitch_left_handedwxgbo.pdfIn PDF document text
- http://tugokutuli.scienceontheweb.net/44263447401.pdfIn PDF document text
- http://temilops.xyz/renabujoporisohfomt.pdfIn PDF document text
- http://raisinsapp.club/sisek7szw3.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/dopugaxelelema/51007933760.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/6aad6bd6-3382-4ebc-b6be-a22165c92803/minapofunufajonu.pdfIn PDF document text
- https://s3.amazonaws.com/gajabedafot/poker_2_pair_rules.pdfIn PDF document text
- http://koxigumom.onlinewebshop.net/blaupunkt_tokyo_110_instrukcja_obsugi.pdfIn PDF document text
- https://s3.amazonaws.com/nasitevu/how_to_find_exponential_line_of_best_fit_on_desmos.pdfIn PDF document text
- https://s3.amazonaws.com/negonanopix/18980076219.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/24573889-f1d6-4788-9f91-b1c354c9475f/gunemubisusoxulefiwoda.pdfIn PDF document text
- https://673fcb93-492a-40d1-a7cc-77260b5c7816.filesusr.com/ugd/62d21a_7e513b61b7dc4d759f9ee8dd4a22801b.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/9c2da000-eab2-41ec-a8a0-6d62c4fbe798/top_praise_and_worship_songs_2020.pdfIn PDF document text
- https://486a928f-df87-4682-b39c-9199637d78f9.filesusr.com/ugd/982a49_131c11a8611a4cd589e6472a9bd12a12.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/tinezedu/bagekapokajawakiwavuvu.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/04c39144-0247-4be6-a983-ea6ee76e7a5f/60221445193.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_off000108ad.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x108AD | 5048 bytes |
SHA-256: 3c210de987beb22d1a110aca271853a97466a20f27fd034c45002eed666ae0f7 |
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font_01_sfnt_off000119cf.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x119CF | 11004 bytes |
SHA-256: 25388dcdbe9fa28176d608856d0b060cbf28215ed43f531e10ff4070f067da09 |
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