MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous links to external resources, many of which are hosted on compromised WordPress sites or disposable domains, indicating a link farm designed to redirect users to malicious content. The ClamAV detection and ML classifier strongly suggest this PDF is malicious, likely serving as a lure for phishing or to download further malware. No scripts were extracted, but the structure points to a multi-stage attack.
Machine Learning
- Nyx PDF Classifier malicious score 0.9936
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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PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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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://doktor-ara.com/userfiles/files/616523153.pdf
- https://nhaban24h.com.vn/wp-content/plugins/super-forms/uploads/php/files/ui0eivs8hsug5dot43n1ndcv4j/zerepiruvuvidi.pdf
- http://manufim.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160922f6b31087---95224186457.pdf
- https://flycam.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160c9014e26362---52871214925.pdf
- https://higher-reason.com/wp-content/plugins/super-forms/uploads/php/files/flftu6p2l4lk5bkb674ccb5ip3/nejogekikiwigubofidute.pdf
- https://relleno-acidohialuronico.com/wp-content/plugins/super-forms/uploads/php/files/d612e870581e0ea2f5a4fa65b18509fd/mopujada.pdf
- http://skoleniridicubrno.cz/ckfinder/userfiles/files/babima.pdf
- https://eseninternational.com/uploads/files/80038905907.pdf
- https://southtours.com/wp-content/plugins/super-forms/uploads/php/files/2jsqm7rvjhguaqctlpakr7k9gs/22893477114.pdf
- http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/75g50njalsvu5pj01686vudia1/98808862094.pdf
- https://xn--nmqu14inmf.com/upload/files/tekuxapogerilopijegof.pdf
- http://vibrosystem.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160cd1ecd1a5b3---lofonokozuwudogobupi.pdf
- http://imagespa.mx/wp-content/plugins/formcraft/file-upload/server/content/files/16073f8532da53---kinitidovusosedipusikoses.pdf
- http://adams-gold.ru/archive/image/file/zerutagiwevapewodopomuloz.pdf
- http://travelsi.ru/ckfinder/userfiles/files/notarimunuraxelimis.pdf
- http://chinazzjx.com/d/files/79431245802.pdf
- https://virker-ikke.dk/files/perovaguzazazufoviwuze.pdf
- https://lcd96.ru/wp-content/plugins/super-forms/uploads/php/files/c288a9c9bfd7683f8ab84c3374206c7c/lidotutumizomopixukifokax.pdf
- http://vladjurnalist.ru/archive/file/82446559672.pdf
- https://cremeconferences.com/wp-content/plugins/super-forms/uploads/php/files/be9adcb439f7a085c5814c90c268c3ad/81663447093.pdf
- http://halvani.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c0b9028a6af---37490296323.pdf
- http://kirks-pool.com/wp-content/plugins/formcraft/file-upload/server/content/files/16091e14f7445f---zulenobuzuxu.pdf
- http://bitite.lv/media/txt/122/file/kusipiw.pdf
- http://hibertek.com/image/files/20210615_080122.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=sample+legal+memo+with+multiple+issues
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00011721.bind7b91e1e0ca07e3bc49f97ab88cdb9926c9b48fcfc89882f20e4277504d5c3b7 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11721 | 17832 bytes |
font_01_sfnt_off000145e5.bin6ff481c1bc787b56df40237a14c515b71b6e92045f07d80a0b4ab4db9ebc5e2f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x145E5 | 10756 bytes |
font_02_sfnt_off00015eb1.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x15EB1 | 16792 bytes |
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