MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics identified it as a link farm, with many URLs pointing to potentially compromised or disposable hosting, suggesting a phishing or malware distribution scheme. The document body was unreadable, but the presence of numerous external links strongly supports the link farm attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9982
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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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 http://pjzhengwang.com/upload/file/20210913_164218_148.pdf In PDF document text
- https://principesgs.com/userfiles/file/tajufaxijunefexudezawe.pdfIn PDF document text
- http://www.petercar0937494634.com/upload/img/files/18325720312.pdfIn PDF document text
- http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1613f07a919a4a---salufosomako.pdfIn PDF document text
- http://busto-wl.gattinonimondodivacanze.it/themes/userfiles/files/29556964602.pdfIn PDF document text
- http://belgium-ex.com/images/blog/file/kekekililukusogamituwe.pdfIn PDF document text
- https://westhigienia.hu/editor_up/60861148393.pdfIn PDF document text
- https://ises.smithpressautomation.com/phpsites/vertical_living/uploads/file/jozevoxab.pdfIn PDF document text
- http://jinruily.com/UploadFile/file/20210901060528800.pdfIn PDF document text
- http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/2s6r0etetevebbhpqfb3uqatq0/kosagaxuzezewurabazi.pdfIn PDF document text
- http://gr-chem.com/upload/files/fibusafapoxofagarulokutu.pdfIn PDF document text
- http://cartopack.be/Images/file/ketufokinukemajevisemu.pdfIn PDF document text
- http://www.brennholz-heinlein.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613cbf3a60db2---baxurojivavovotegolu.pdfIn PDF document text
- https://afmiletisim.com/resimler/files/68497540834.pdfIn PDF document text
- http://hypotekaprezamestnancov.sk/res/file/fekoselaledalokixe.pdfIn PDF document text
- https://processwork.archerhuang.com/ConImg/files/ruloluzulow.pdfIn PDF document text
- https://vkgnassociates.com/dayafter/uploadimages/newsimages/file/78572979593.pdfIn PDF document text
- https://sitarasign.ir/data/file/3429403079.pdfIn PDF document text
- http://xedaptap.net/userfiles/file/dugorazisizijopizifasetav.pdfIn PDF document text
- http://tayles.com/uploaded/86015229305.pdfIn PDF document text
- https://www.koreayokogawa.com/ckfinder/userfiles/files/tetuwabavimazeza.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=giochi+di+gestione+per+androidPDF link annotation
- 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://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00010dd0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10DD0 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off000125e7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x125E7 | 10788 bytes |
SHA-256: cee37ae40edbba1a4885e29805abe97674ee6d99346a1b8a0c3b6fbd8d65ed4b |
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font_02_sfnt_off00013e82.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13E82 | 17972 bytes |
SHA-256: 8b5c7f1af53dc435962c3726df3d632068a3270483f1486133235c0356b8b0f3 |
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