MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file contains numerous external links, a common tactic for SEO poisoning and phishing lures. The heuristic PDF_SEO_LINK_FARM and PDF_SEO_UTM_REDIRECTOR_LINK indicate a large number of links designed to redirect users, with one prominent example being https://jacksth.ru/strik. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9992
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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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://jacksth.ru/strik?utm_term=einfache+lieder+mit+noten+f%25C3%25BCr+gitarre PDF link annotation
- https://kavavori.weebly.com/uploads/1/3/4/0/134012315/84f8c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4427499/normal_60579c3660a45.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4375353/normal_5fcd3b23c700e.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4469359/normal_6037ba950420c.pdfIn PDF document text
- https://gupijevud.weebly.com/uploads/1/3/1/4/131407369/6ffb0f4.pdfIn PDF document text
- https://mulokigapasol.weebly.com/uploads/1/3/1/0/131070847/3229253.pdfIn PDF document text
- https://zufulakoloti.weebly.com/uploads/1/3/5/3/135301661/musuvo.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4449984/normal_601ed8763729f.pdfIn PDF document text
- https://pozimifekof.weebly.com/uploads/1/3/4/6/134674510/842881.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4413712/normal_5fe393ae568a3.pdfIn PDF document text
- https://vumifedesonuzik.weebly.com/uploads/1/3/4/8/134849268/3966487.pdfIn PDF document text
- https://pejifivoriruruk.weebly.com/uploads/1/3/4/3/134314693/sebajerixerezupivoxo.pdfIn PDF document text
- https://xipejefokodidub.weebly.com/uploads/1/3/4/6/134612454/360dbddd57758.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/kovilowab/braverman_test_deutsch.pdfIn PDF document text
- https://s3.amazonaws.com/mogipegi/2004_honda_crv_manual_transmission_oil_change.pdfIn PDF document text
- https://s3.amazonaws.com/woberiz/36491258082.pdfIn PDF document text
- https://s3.amazonaws.com/dikobepibelun/47531335398.pdfIn PDF document text
- https://s3.amazonaws.com/tokit/portfolio_outdoor_lighting_300w_transformer_manual.pdfIn PDF document text
- https://s3.amazonaws.com/dinigugaxej/adobe_flash_player_11_plugin_free.pdfIn PDF document text
- https://s3.amazonaws.com/tokit/4485793046.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/03ee50bc-2d14-40ae-8a34-e95cac022341/is_variable_speed_pool_pump_worth_it.pdfIn PDF document text
- https://s3.amazonaws.com/lulelepese/zuwowitojet.pdfIn PDF document text
- https://s3.amazonaws.com/vesubodufisi/nkjv_bible_app_no_ads.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b46c9da7-a014-40d2-8859-542dd566a969/pinosuzefupukukire.pdfIn PDF document text
- https://s3.amazonaws.com/rorives/why_furnace_pilot_light_wont_stay_lit.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_off0000c1ad.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC1AD | 5336 bytes |
SHA-256: 71121104007aa3b7d8e49ad9cd7165cefec7b2b8be1517456203830d08a58f41 |
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font_01_sfnt_off0000d378.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD378 | 9172 bytes |
SHA-256: 2beeb58a93de8fda23ac7d31e93368f662cbd543275fa54da81a757412e981cb |
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