MALICIOUS
216
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF file exhibits multiple indicators of malicious activity, including malformed streams and a high ML classification score. It contains numerous external links, many pointing to SEO-optimized PDF hosting sites, suggesting a phishing or malware distribution campaign. The presence of a link to 'bologen.ru' with UTM parameters indicates a potential redirector for malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
Heuristics 7
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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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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Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTHA PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
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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://bologen.ru/123?utm_term=database+management+system+pdf+by+sudarshan PDF link annotation
- https://static.s123-cdn-static.com/uploads/4451970/normal_600066f665c80.pdfIn PDF document text
- https://zugozoriv.weebly.com/uploads/1/3/4/7/134770463/gusukupina.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4408195/normal_6023f0382e4c9.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4428054/normal_600c19d3dc66a.pdfIn PDF document text
- https://boviseweduxiraz.weebly.com/uploads/1/3/0/7/130776594/47f43a0ac4d2b4.pdfIn PDF document text
- https://lavolobaned.weebly.com/uploads/1/3/0/7/130740571/6b853e393.pdfIn PDF document text
- https://muxupodijem.weebly.com/uploads/1/3/4/8/134885552/piduserujesi-joreku-wavedidejuguli-repak.pdfIn PDF document text
- https://xobawaxotax.weebly.com/uploads/1/3/1/4/131453143/vovodoboxixanu.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/jitimesolagun/angry_birds_classic_mod_apk_old_version.pdfIn PDF document text
- https://d670dda7-df53-4ef1-8eda-d3256df28744.filesusr.com/ugd/dbbbec_a87bf545af704b8c8ab6274a7678f584.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/sikuva/jikosemaxazigivodiwurag.pdfIn PDF document text
- https://s3.amazonaws.com/nigimul/fuwofagozaja.pdfIn PDF document text
- https://359ea524-acbf-40a7-8d58-ee96a8f10bc8.filesusr.com/ugd/ca2e76_024abc1738cb481da2d7b9f0f7a40eb3.pdf?index=trueIn PDF document text
- https://4f0754e2-f0c4-47db-826b-83042027646c.filesusr.com/ugd/7a11b0_4e7c97d0449648d48030eb87d30aecfd.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/kiremefegonar/likiz.pdfIn PDF document text
- https://788ae96d-7a4f-4726-91a9-07bb742fb3e7.filesusr.com/ugd/97aff7_89299545a03d41d49e4ee93c523108a2.pdf?index=trueIn PDF document text
- https://f78a7b13-e75c-4ddc-9f3c-03cd83736f6c.filesusr.com/ugd/90c53f_8a52be0f07b547a197ed5cd89913a802.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/lixasifasi/innas_set_dungeon_guide.pdfIn PDF document text
- https://s3.amazonaws.com/kavalukato/53584073720.pdfIn PDF document text
- https://s3.amazonaws.com/muvojugejoxip/zelagujorinad.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_off0000f8d2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF8D2 | 5664 bytes |
SHA-256: 8ea3fa486ae8913f4853ba04e7db75cb0e85dd4e09fd54b5a7af91c50c31619a |
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font_01_sfnt_off00010bf2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10BF2 | 10408 bytes |
SHA-256: 70b1efd96ff7eb24a5ca659ba04ef878477806c584633d818710fe75784a4837 |
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