MALICIOUS
216
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous links to external websites, many of which are hosted on compromised CMS uploads or disposable hosting, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of embedded URLs and the nature of the links point towards a spearphishing attachment attack pattern, likely designed to lead the user to download further malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9985
Heuristics 8
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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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Callback phishing phone lure medium SE_CALLBACK_LUREDocument asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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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://drafthe.ru/uplcv?utm_term=intellectual+property+rights+lecture+notes+pdf
- http://kasand.com/userfiles/xafesoniganozisi.pdf
- http://computergramm.com/userfiles/file/mabiduzaku.pdf
- http://www.rlktechniek.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1613cd9eb8fcd0---gofuzegofev.pdf
- https://stthomasorthodoxchurchsouthpampady.com/userfiles/file/buxidob.pdf
- http://stark-tools.ru/images/uploaded/tabitaxotapugezugotox.pdf
- http://www.sm.ac.th/ckfinder/userfiles/files/14524885213.pdf
- http://eperon-kochersberg.com/img_db/jovokenon.pdf
- https://lajovisena.com/gallery/file/mawoluzapo.pdf
- http://shrlie.com/upload_fck/file/2021-9-5/20210905114437885275.pdf
- https://www.hadlowsecurityshutters.com/wp-content/plugins/super-forms/uploads/php/files/05a8f6cfd52608a8a1976913776d6906/zariluxona.pdf
- http://skonasystems.com/userfiles/file/59087664676.pdf
- https://autotronics.vn/userfiles/file/79709714805.pdf
- https://izharfoster.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c6879b5c23---85467857304.pdf
- https://drmiamiconnect.com/wp-content/plugins/super-forms/uploads/php/files/a9859d6367f2306a4b870b443b7cd221/sevotobezej.pdf
- http://rracc.com/file_media/file_image/file/22506398590.pdf
- https://kga-am-adlergestell-ev.de/kga/ckfinder/userfiles/files/4774955837.pdf
- http://kurskodkb.ru/page_edit/_samples/userfiles/files/jolunarupawiva.pdf
- https://anninhsieuthi.online/upload/files/siganavijabipebonekak.pdf
- https://www.golaw.net/wp-content/plugins/formcraft/file-upload/server/content/files/1612ea8d18f133---dalabulakosozitid.pdf
- http://mutitar.com/user_img/files/75869143309.pdf
- https://buddingheights.org/wp-content/plugins/formcraft/file-upload/server/content/files/161327db3f1bf7---82140695257.pdf
- 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_off0000d296.bin4ed5c85b76cc2d3891e29ff678840618484286d03ea4a2d4903afa6d1ba267a0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD296 | 17792 bytes |
font_01_sfnt_off00010065.binf6065e4d2352c02990a8ce056f938dfa7b11e23d2d505aeb5853c9b63901738f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10065 | 11064 bytes |
font_02_sfnt_off000119eb.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x119EB | 16792 bytes |
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