MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The ML classifier strongly indicated maliciousness, supported by heuristics identifying the PDF as a link farm pointing to compromised CMS uploads and disposable hosting. The document body was unreadable, but the presence of numerous external URIs, many hosted on potentially compromised WordPress sites, suggests a tactic to distribute malicious links or manipulate search engine results. No scripts were extracted from this sample.
Machine Learning
- Nyx PDF Classifier malicious score 0.9964
Heuristics 5
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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://www.hinogas.com/wp-content/plugins/super-forms/uploads/php/files/kc0u7g6eod1n9r24oimffh8tfp/54667989298.pdf
- http://liebherr-tr.com/userfiles/file/midit.pdf
- https://ariaparvaz.com/basefile/ariaparvazcom/files/3139181451.pdf
- https://mojer.bg/files/54297410218.pdf
- http://atdawnwelift.com/userfiles/file/pexomakugutidowuma.pdf
- http://vinczeandlaszlo.com/upload/dipovatuk.pdf
- http://hum-lucknow.org/test/fckeditor/file/mejafaverese.pdf
- http://skuplaptop.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1607753dbb9724---20893541140.pdf
- http://sl-light.ru/design/img/upload/file/48260918194.pdf
- https://g3az.com/wp-content/plugins/formcraft/file-upload/server/content/files/160705f7867b93---97900062962.pdf
- http://wallsfamilyreunion.com/clients/876683/File/dogawalaxuxej.pdf
- https://neoville.ru/wp-content/plugins/super-forms/uploads/php/files/6cab4cce83902f5eb60ef770e693c9a8/97741290357.pdf
- http://marinapogon.pl/upload/file/gigox.pdf
- http://wbbray.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070c3ce8cf1e---sufudage.pdf
- https://kudamatsu.org/userfiles/file/goduf.pdf
- https://www.hotel-palladium.gr/wp-content/plugins/super-forms/uploads/php/files/jcshntm3il88ft61il15ohnsj8/nojovutusuti.pdf
- https://binarbaidrealestate.com/public_html/userfiles/file/zedif.pdf
- http://szentdorottyapatika.hu/files/gilanakajowejo.pdf
- http://akinmedical.com/uploads/file/55503462659.pdf
- https://acronimocostanzo.com/userfiles/file/kiropekukajomapurexizurit.pdf
- https://prairieroseclothiers.com/FCKeditor/file/51416458679.pdf
- http://cosmosimpex.com/app/webroot/ckfinder/userfiles/files/pudolarezafuladijaligala.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=what+is+entrepreneurial+strategy
- 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_off0000ea0e.bin37331e67bbccf0b69268aa6aeecfce33fb9d70a5aadfd6716fb43bc21a715133 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEA0E | 17488 bytes |
font_01_sfnt_off000117de.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x117DE | 16792 bytes |
font_02_sfnt_off00012ff5.bin6a2efb0aa2c2bf566ec3914de59ba2aec1a22bf686851bf90f6aa4cb99322bf4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12FF5 | 10620 bytes |
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