MALICIOUS
184
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by ML classifiers and ClamAV as malicious, exhibiting characteristics of a phishing lure. The document body is heavily obfuscated, but heuristics indicate it functions as a link farm, directing users to potentially compromised WordPress upload storage and other disposable hosting sites. The presence of embedded URLs and the overall structure suggest an attempt to deliver a malicious payload or redirect users to a phishing site.
Machine Learning
- Nyx PDF Classifier malicious score 0.9936
Heuristics 8
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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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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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Fake invoice / payment lure low SE_INVOICE_LUREDocument contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
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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://envomask.com/wp-content/plugins/super-forms/uploads/php/files/33cf5cecae0f0a707534d0da05db8a8c/dojibaxi.pdf
- http://oilmachineydy.com/d/files/41917577021.pdf
- http://www.peplex.it/wp-content/plugins/formcraft/file-upload/server/content/files/160a09e5e0cf22---45457149364.pdf
- http://abapaposentados.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b9860e82214---34806151923.pdf
- http://kadh.kr/bobod/upload/file/xesabevu.pdf
- https://zemiigori.com/uploads/file/80310170080.pdf
- http://vasilii-orlov.fun/wp-content/plugins/super-forms/uploads/php/files/56244271960f07636fc25e87f8f29a33/winomup.pdf
- http://centrumbiznesurawicz.pl/userfiles/file/85228713045.pdf
- http://ei-windykacja.pl/upload/file/45544476357.pdf
- https://insights3.com/wp-content/plugins/super-forms/uploads/php/files/3716787cc8e6fdd2d4465146369180d2/52368759689.pdf
- http://banner-ever.com/ckImg/files/3321485489.pdf
- http://ngpsusa.com/wp-content/plugins/super-forms/uploads/php/files/107g4qma3mqt092niikg99kehm/vasifewuw.pdf
- https://vandolderskb.com/images/usr/gajijija.pdf
- https://gearforfree.com/wp-content/plugins/super-forms/uploads/php/files/l3gn7bedmupmrf020ra3mmr7la/rutafi.pdf
- http://ansing.nl/userfiles/file/19987935768.pdf
- https://www.generalutilities.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b081e473d4f---gakurexutejodamibedinupuf.pdf
- https://ratsimae.ee/media/contents/file/ludojasinanefedojiwib.pdf
- http://agcslohian.com/userfiles/file/72404386832.pdf
- http://safarang.com/basefile/files/56955900172.pdf
- http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cf938f3e96f---81479714005.pdf
- http://immodraft.nrw/images/architekten_agentur_images_/file/rowapaxediv.pdf
- https://relaxationplusmn.com/wp-content/plugins/super-forms/uploads/php/files/7ec8ee3b4aff805062cea48d60dfabb6/fibugipoma.pdf
- https://xn--80adj7cxa.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/86806b2764bd8a5a00fd63e0ecf78f20/taneji.pdf
- https://www.fifatravels.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094b0cc1fa27---34364149801.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=stanislaus+county+traffic+violations+office
- 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_off00011556.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11556 | 16792 bytes |
font_01_sfnt_off00012d68.bin6c73cbb04cc012ae8826b48207a0d4df73f48ddfcb7907b60d372498d4a261d4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12D68 | 18132 bytes |
font_02_sfnt_off00015cf1.bin5523985d60d7253012a5b9182bc50732004e5ae13c8565897d6435bc6b087c3c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x15CF1 | 10684 bytes |
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