MALICIOUS
254
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous links to external websites, many of which are identified as redirectors or part of a link farm, suggesting a phishing or malware distribution scheme. The presence of a link to 'crophysi.ru' with a 'troubleshooting hp officejet 6500 printer problems' UTM parameter indicates a lure to a potentially malicious site. The ML classifier and ClamAV detection strongly support the malicious nature of this PDF.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
Heuristics 6
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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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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://crophysi.ru/strik?utm_term=troubleshooting+hp+officejet+6500+printer+problems In PDF document text
- https://sidutoxa.weebly.com/uploads/1/3/4/8/134886075/purapixufi-vaxubekefip-virubaxenowa-fonele.pdfIn PDF document text
- https://sopetenoredu.weebly.com/uploads/1/3/5/3/135318191/3656267.pdfIn PDF document text
- https://pawunotapi.weebly.com/uploads/1/3/1/4/131408062/masogosuvu.pdfIn PDF document text
- https://zasufademebarav.weebly.com/uploads/1/3/4/7/134737005/64e61091c80c8c.pdfIn PDF document text
- http://timecodes.net/algebraic_expressions_problems_and_answersyf4v5.pdfIn PDF document text
- https://numilobes.weebly.com/uploads/1/3/4/2/134235742/359531.pdfIn PDF document text
- http://igcopyrightverify.com/pejisijadewozalubunwwvlb.pdfIn PDF document text
- https://cdn.sqhk.co/kululojilo/Ejnic0Z/18479637231.pdfIn PDF document text
- http://studyweb.site/spirit_and_grace_ricky_manalo_youtubegbdrq.pdfIn PDF document text
- http://prognoz-football.club/dunkin_donuts_menu_drinkov2tu.pdfIn PDF document text
- https://cdn.sqhk.co/febutatesu/N1QxBjh/wifi_file_transfer_slow_windows_10.pdfIn PDF document text
- https://vumusubivabup.weebly.com/uploads/1/3/4/4/134491869/pamawaxorof.pdfIn PDF document text
- https://najovukuno.weebly.com/uploads/1/3/1/4/131453374/woges-lipesalojo-jumebizipep.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/niwotipugonuvoz/chirru_kannada_hd_movie.pdfIn PDF document text
- https://s3.amazonaws.com/padadutiseni/canadian_drinking_water_guidelines_tds.pdfIn PDF document text
- https://s3.amazonaws.com/gixirojozogufux/wagufifibajivexavejok.pdfIn PDF document text
- https://s3.amazonaws.com/vososasoxumete/how_to_give_cognitive_behavioral_therapy.pdfIn PDF document text
- https://s3.amazonaws.com/lokijuronig/92285050187.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_off0000fc00.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFC00 | 5804 bytes |
SHA-256: fc6671a51f04d8c51254e7530b48abcc46c4d90767d677d112c005feb04eccfa |
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font_01_sfnt_off00010faf.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10FAF | 10164 bytes |
SHA-256: 4a0c0be161076b8319e89999e55e4ed3ffd89a350bbddcd4f8763d39adfd4232 |
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