MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF file was flagged by multiple heuristics as malicious, including a ClamAV detection for Pdf.Phishing.Trojan. The numerous embedded URLs, many pointing to compromised CMS uploads or disposable hosting, suggest a link farm designed to redirect users to malicious sites. The ML classifier also strongly indicated maliciousness.
Machine Learning
- Nyx PDF Classifier malicious score 0.9951
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 https://smidgel.ru/uplcv?utm_term=concepts+of+biology+lab+manual+answers
- https://ajansnigde.com/resimler/files/25923989238.pdf
- http://www.lavalledesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ce3ed67ea4---nupedafirurugakajej.pdf
- http://tavernadelsnoguers.com/wp-content/plugins/super-forms/uploads/php/files/97525ee7b758ebe0b5a418d334957ecb/72241186316.pdf
- https://universal4shipping.net/userfiles/file/66715763612.pdf
- http://haus-st-otmar.ch/userfiles/files/benurunatiranivojumij.pdf
- https://stvorki.ru/files/file/rifezinefagiririlavovem.pdf
- https://shining4u.com/wp-content/plugins/super-forms/uploads/php/files/4088b3616ca6f2229fb108a04f1fc4b1/75654252787.pdf
- http://jncs.kr/page_data/file/20210526025157.pdf
- http://slenderclub.cz/ckfinder/userfiles/files/86255432527.pdf
- https://irisapp.cn/uploadfiles/fckeditor/20210519/file/16214060039253.pdf
- http://www.dnevi-sekretarjev.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1609090f804208---97345804152.pdf
- http://be-now.pl/userfiles/file/zeledoxosavavefuxo.pdf
- https://bravo-hk.com/userfiles/file/lewesudixedidujekonal.pdf
- https://www.golaw.net/wp-content/plugins/formcraft/file-upload/server/content/files/16085644fad263---bogolas.pdf
- http://www.psstrecno.sk/wp-content/plugins/formcraft/file-upload/server/content/files/1609e9e6f15409---71985027173.pdf
- https://www.swx.global/wp-content/plugins/super-forms/uploads/php/files/643239139d376d0351444775704fb917/77151160440.pdf
- http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/5f93b2e4fd63f2dd9930bbdfe71814ee/70982956773.pdf
- http://www.canadavisaservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d87a9bf6be---49437628078.pdf
- https://binarbaidtrading.com/public_html/userfiles/file/82750471843.pdf
- https://webtraffic.ch/wp-content/plugins/super-forms/uploads/php/files/roafjoba7rneqvidhc702n680v/radelipetu.pdf
- https://winston-woodward.com/wp-content/plugins/super-forms/uploads/php/files/b8ebf87e7f42dc53bd112b4544c28501/18096030710.pdf
- http://archerelectricsupply.com/userfiles/file/lijiviworizosini.pdf
- https://www.hontoys.com.au/wp-content/plugins/super-forms/uploads/php/files/oomh0i53uei5ln12096ujgjr4j/fomatofodare.pdf
- https://growlocals.com/wp-content/plugins/super-forms/uploads/php/files/56e57d30cbec3bbed64dcf4c730e7f28/71976447548.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_off0000bee9.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBEE9 | 16792 bytes |
font_01_sfnt_off0000d6fb.bindfce75f6014f6a38c6b2c0ca36e5303a848e6f3753f010ff1650a92b8cd1ffb5 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD6FB | 15852 bytes |
font_02_sfnt_off0000ffd7.bin753dcb5e86b3ed6876391a9a7aa0067a1e1597a3f93a437a2e87f8759849ae85 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFFD7 | 11292 bytes |
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