MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF file containing embedded JavaScript, which is a common technique for executing malicious code. It also features a large number of external links, many of which point to compromised websites or disposable hosting, suggesting a phishing or credential harvesting attempt. The ML classifier and ClamAV detection strongly indicate malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9955
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 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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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 http://as-eng.biz/userfiles/file/82445992618.pdf
- https://groupburuemas2.com/contents/files/86166452641.pdf
- http://fst-uinsu.net/userfiles/files/zazadeguxenedojuduve.pdf
- https://girisimhaber.com/uploads/file/24830337831.pdf
- http://tucsokszekszard.hu/images/news/file/daruwelareni.pdf
- http://avesta-hmora.boj.se/uploads/userfiles/files/ziwajebufifanutexef.pdf
- https://edouardweil.com/userfiles/file/72325841970.pdf
- https://heritagelogs.com/wp-content/plugins/super-forms/uploads/php/files/2i2os8e07e44efqjqg8dk1cd9d/zosedavavedenanofamor.pdf
- http://baigeleather.com/userfiles/file/16232176108.pdf
- http://rococosofa.com/files/files/bowebujomeza.pdf
- http://agedwedfjtj.pretty-match.com/upload/files/93618267227.pdf
- https://k-newsletter.com/ckupload/files/92285309170.pdf
- http://bjerkelunden.org/content/files/userfiles/file///lulawakugubumovakif.pdf
- http://cocoabuterol.com/upload/files/39169481447.pdf
- http://www.fsnn.se/wp-content/plugins/formcraft/file-upload/server/content/files/1612f7b524be3c---93104949152.pdf
- https://luxesystem.site/js/ckfinder/userfiles/files/piboxigovosewazukax.pdf
- https://harshahometutors.com/uniformkontakt/userfiles/image/files/vixikezetoni.pdf
- http://adance0112.com/upfile/editor/file/27948994047.pdf
- http://kdsonline.org/userfiles/file/9767694522.pdf
- http://wildpflanzen-planung.de/file/62067228876.pdf
- https://florissantdesign.nl/docs/Image/file/nuziv.pdf
- http://emiem.pl/public/upload/ckfinder/userfiles/files/86648160181.pdf
- https://www.diktu.com/wp-content/plugins/formcraft/file-upload/server/content/files/161471af9769fc---vunezabarikixigom.pdf
- http://daithanhnam.com/upload/files/bazelawuvunisote.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=tienda+apps+android+gratis
- 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_off0000dab4.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDAB4 | 16792 bytes |
font_01_sfnt_off0000f2c6.bin6861220c55d73e7cb9ac13ee761f16c2ad12a5412b41bf5619214c1882163a46 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF2C6 | 18392 bytes |
font_02_sfnt_off0001221a.bine0e36146c8dbf91f592e66d0d83ac025223463605786fd7bb31c632296ef0611 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1221A | 10484 bytes |
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