MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically identified as a phishing trojan. It contains numerous embedded URLs, many of which point to compromised CMS uploads or disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The document body is heavily obfuscated and unreadable, providing no direct content clues beyond its structure.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
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://atut-biuro.com/uploaded/file/54740905522.pdf
- https://ildiko-szepsegszalon.hu/userfiles/file/69548733349.pdf
- https://study4student.com/cache/fck_files/file/85185677939.pdf
- https://ecoverservice.be/gallery/file/92445464909.pdf
- http://akkoryazilim.com/userfiles/file/28433485993.pdf
- http://chemonova.com/FCKeditor/file/sevemalojeb.pdf
- http://sip7.online/wp-content/plugins/super-forms/uploads/php/files/01e4a0d3ea20a0cff6b3640c60593d49/sazite.pdf
- http://shsclassof1959.com/clients/a/a7/a7a82b2a6025f7fafce5d77be70bf845/File/18570045939.pdf
- http://babamoleskine.com/files/file/zafivimigufajaxojiwuna.pdf
- http://llux.vn/uploads/files/gozosemudadufukagumekat.pdf
- https://wills.sg/wp-content/plugins/super-forms/uploads/php/files/b934d40fb7f7dc5123991c856ceefc34/69232407225.pdf
- http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/160cc4f9f01ab0---37028912267.pdf
- http://librojuridico.com/aym_images/files/91851928783.pdf
- https://borderpak.com/wp-content/plugins/super-forms/uploads/php/files/9a4a16b10ba8b81b045d7240ec5f7515/pasiwoxozuxonilobo.pdf
- https://tecsal.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16089e13d1a6c7---visoduzazixu.pdf
- https://dm288.rs/slicice/file/rojemil.pdf
- http://kiiga.ru/userfiles/file/nuruxisuxadavipaxobiveti.pdf
- http://www.ambredore.com/wp-content/plugins/formcraft/file-upload/server/content/files/160acf9e0b0569---movedox.pdf
- http://igigeothermal.jp/userfiles/file/26058893243.pdf
- http://bright-mineral.com/uploadfile/file/2021070101071959.pdf
- https://govox.co.uk/wp-content/plugins/super-forms/uploads/php/files/4gr3b26jdklv00ahrs3i4nnn1k/76295252978.pdf
- https://assurancemauricie.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d2ee19a564---48497992842.pdf
- https://www.lokalesichtbarkeit.de/wp-content/plugins/super-forms/uploads/php/files/b1qpjq5tgvrbqi726pv0rm5ibq/lemepovaj.pdf
- https://autosaloncenter.com/uploads/file/zafuzezigu.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=chamberlain+liftmaster+professional+1%2F2+hp+manual+1355m
- 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_off0000d770.bin3426dfff454b4476469a4f2e32389af1a1caecdc246c21ac23f073b66cd3428b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD770 | 14704 bytes |
font_01_sfnt_off0000fc20.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFC20 | 16792 bytes |
font_02_sfnt_off00011437.binfc432062fee53764854071f642721b44cd43da1cf4bccdcad9d83402ebbdd71c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11437 | 11404 bytes |
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