MALICIOUS
184
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF document flagged by ClamAV as a phishing trojan. It contains embedded JavaScript and numerous external URLs, many of which point to compromised CMS uploads or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of embedded JavaScript indicates an attempt to execute code within the PDF viewer.
Machine Learning
- Nyx PDF Classifier malicious score 0.9980
Heuristics 8
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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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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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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 https://catamma.ru/uplcv?utm_term=king+o+root+apk
- https://ijp2.com/contents/files/14875371327.pdf
- http://onlytech-tunisie.com/userfiles/file/zazuzanovow.pdf
- http://exim5.hu/_user/file/kijil.pdf
- http://arserwood.com/js/fckeditor/editor/filemanager/connectors/php/connector.php/upfiles/file/210908000215068390l4bm8t.pdf
- http://www.driftime.ee/wp-content/plugins/formcraft/file-upload/server/content/files/1613c75a8912eb---loritoku.pdf
- http://61kidsclub.com/userfiles/file/93703337331.pdf
- https://rarahil.org.np/ckfinder/userfiles/files/61371463044.pdf
- http://kraemer-duennebacke.de/files/file/zabojakiroregufuz.pdf
- https://intersensor.ro/v2011/Files/fck_upload/file/30999735023.pdf
- http://www.skupp.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1613d0ec2ac559---74410496781.pdf
- https://rajatotogroup2.com/contents/files/53907012087.pdf
- http://yomamasushitogo.com/uploads/files/wulenebezejawarularejo.pdf
- https://livresdarts.com/ckfinder/userfiles/files/94818104908.pdf
- http://ozdoby-betonowe21.pl/Upload/file/zavowomuwigeta.pdf
- http://havefuntogether.com/image/upload/File/wepalesugeleg.pdf
- http://bjqyms.com/filespath/files/20210910084749.pdf
- http://kystop.com/wp-content/plugins/super-forms/uploads/php/files/675dab2eaf2c2e0d029c1876eba6d3c4/95574849905.pdf
- http://korea-labels.com/ckfinder/userfiles/files/vujudavad.pdf
- https://red-adlay.com/upload/files/20715821059.pdf
- http://axwelindia.com/uploads/25941840143.pdf
- http://trevorhannant.com/zevezisowefu.pdf
- http://pasted-radio.de/web/files/64165580556.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_off0000be77.bin317396486d837001341689a64fa1b54f1e5d859018663387132990d132eb5db6 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBE77 | 17816 bytes |
font_01_sfnt_off0000eca5.bin00c8ec9eccb93cbf75de7d752097fcd1e8cdbf95b2d2d702084480a31b72a4a8 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xECA5 | 10164 bytes |
font_02_sfnt_off0001037b.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1037B | 16792 bytes |
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