MALICIOUS
176
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF document exhibits characteristics of a callback phishing or tech-support scam, as indicated by the 'SE_CALLBACK_LURE' heuristic. It contains numerous links to external websites, many of which appear to be compromised WordPress installations hosting PDF files, suggesting a link farm or distribution network. The ML classifier and ClamAV detection further support its malicious nature, flagging it as a phishing trojan.
Machine Learning
- Nyx PDF Classifier malicious score 0.9972
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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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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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://archism.ru/uplcv?utm_term=gordon+county+tag+office
- https://grahampropertytax.com/wp-content/plugins/super-forms/uploads/php/files/8670d1ecd01d35d16f0257b694bcde51/kisibafazijeruduwag.pdf
- https://www.hungarianassociation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c5bd233a6a---40226711582.pdf
- https://caravanandre.it/wp-content/plugins/super-forms/uploads/php/files/98615d73fed5d940f9b300d24fdd8706/39434077576.pdf
- http://www.kmclogistics.com/wp-content/plugins/super-forms/uploads/php/files/82cfccd4b43ae326a7900a5c8fb5f36a/98492079827.pdf
- http://www.appsolutely.sg/wp-content/plugins/formcraft/file-upload/server/content/files/160d6fcb73d004---bafadefisibuxesifibelum.pdf
- http://iamsoldierfit.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cb99953ea3b---51348608922.pdf
- https://www.beewellrx.com/wp-content/plugins/super-forms/uploads/php/files/tmp/36967628344.pdf
- https://smoothnomad.com/wp-content/plugins/super-forms/uploads/php/files/tj2grjl432nk6brr9qgduj76dp/84917108804.pdf
- http://konsultacjenaukowe.eu/Upload/file/91168773727.pdf
- https://dentinale.eu/wp-content/plugins/super-forms/uploads/php/files/98e91fd18089c7a4cbe144d0373cd131/69781597234.pdf
- http://2girlstrippin.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ad25e664f1---60005339350.pdf
- https://xn--1--8kcai1ck2bs.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/0f04b38c81dacde999a7d8b8add66c40/67616829069.pdf
- http://dambi.pl/userfiles/file/22216437603.pdf
- http://serramentisiciliano.it/userfiles/files/wiwugavisipe.pdf
- https://jfefood.com/wp-content/plugins/super-forms/uploads/php/files/f52aee980a51dcc6b6c678d760617174/namixitivak.pdf
- http://pantryscan.com/123cars/imagefck/file/lemunene.pdf
- http://aryajob.com/user_upload/file/dewezat.pdf
- https://energooptima.hu/upload/File/xemisegeneroma.pdf
- https://refundsrefunds.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9167fcf5ba---rebaxofusugaxanasozivijob.pdf
- http://recruiters-zone.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a075bdaf3c3---vukujerutinu.pdf
- http://www.petersmetalstitching.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160b40a2cd0b80---73592523227.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_off0000de23.bin1822a2880ca3185aeb813107b26a440ee632afe37d21699d60a03d32c9d7f866 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDE23 | 17400 bytes |
font_01_sfnt_off00010bcc.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10BCC | 16792 bytes |
font_02_sfnt_off000123e3.bin40f3effd93d61b36057baa7820aeefe23754641a7c09a1a5b240b8ce3894a94f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x123E3 | 10692 bytes |
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