MALICIOUS
204
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous external links, many pointing to benign files, but at least one redirector URL (https://leonvi.ru/wix?keyword=prepositional+phrases+as+adjectives+and+adverbs+exercises) is used to lure users. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting an SEO-based lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
Heuristics 7
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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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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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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://leonvi.ru/wix?keyword=prepositional+phrases+as+adjectives+and+adverbs+exercises PDF link annotation
- http://devicesprotectionforusers.site/48714738737q3hhy.pdfIn PDF document text
- http://tipofeliluget.medianewsonline.com/86443784934.pdfIn PDF document text
- http://rimarilomikozu.medianewsonline.com/48852495904.pdfIn PDF document text
- http://carinsusa.info/spanish_food_dictionary38if6.pdfIn PDF document text
- http://lebedugipul.mywebcommunity.org/astm_construction_standards.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/leteraxewe/mojuseru.pdfIn PDF document text
- https://21d44941-995c-48b9-956b-8145330e20d5.filesusr.com/ugd/577b75_5ec1bd0d9e5b40f281e89e2836967040.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/naxozelozude/netgear_prosafe_gs108t_default_ip.pdfIn PDF document text
- https://s3.amazonaws.com/wolawatin/duwimiposudutodis.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/20463e8a-da82-42a8-ace2-1783a3ccb2dc/mepunakebivapoxirezipiza.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/65e31464-e6a4-4d1c-b197-c5292a6a66e1/katuzusevo.pdfIn PDF document text
- https://s3.amazonaws.com/wurivuve/83807299168.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/2fdb84e9-7a8a-4c7a-8d06-b90cd3209c10/jugululazede.pdfIn PDF document text
- https://s3.amazonaws.com/pogolo/gujep.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/0c2e7bbb-66e8-4f59-b2f4-d4a93a5b3e37/pioneer_ddj_sx2_controller_price.pdfIn PDF document text
- https://9e2bb560-353e-4f5d-a08b-1363560edab4.filesusr.com/ugd/6c032c_faf381c937794390acb3c51093557bc8.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/banula/25606420630.pdfIn PDF document text
- https://s3.amazonaws.com/vibuvomomuv/safativemi.pdfIn PDF document text
- https://b724dda4-e2e0-47c5-811c-ae3b7273578b.filesusr.com/ugd/a1e5ee_97e3e532e2ac42e1996eff9e1f231753.pdf?index=trueIn PDF document text
- http://wejajesenopezoj.onlinewebshop.net/rixofakedaganogabo.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_off0000ee09.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEE09 | 5508 bytes |
SHA-256: 78cb7a182d78a7ae1dacadfeae5fa58f61ac1546b65110869f95245e46972b5d |
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font_01_sfnt_off000100bd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x100BD | 10888 bytes |
SHA-256: 50716ae986912c4a5d2ebe3c2e143487031e8b15a50bbf4597433c3ceea439ff |
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