MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The presence of embedded JavaScript and a large number of links pointing to compromised CMS uploads strongly suggests a phishing or malicious content delivery attempt. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the overall pattern indicates a malicious intent to redirect the user.
Machine Learning
- Nyx PDF Classifier malicious score 0.9960
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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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 http://anhuifan.com/upload_fck/file/2021-5-7/20210507011224804064.pdf
- http://jamoncup.es/wp-content/plugins/formcraft/file-upload/server/content/files/160c97d280a683---93989544035.pdf
- https://stakeoutllc.com/wp-content/plugins/super-forms/uploads/php/files/0ecaceb3d0e0e2b5cdbd00ffb0bc5f58/4102508013.pdf
- http://arunimaflavours.com/userfiles/file/denadel.pdf
- http://abwcoliseum.com/uploads/files/52241904530.pdf
- https://qualitycountscleaning.com/wp-content/plugins/super-forms/uploads/php/files/77f00c9654ec196c6f3fde6dc129bf00/93675434282.pdf
- https://www.alpha-dynamics.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1606f6570aa746---93502262575.pdf
- http://wakingbeauty.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b1386a640ed---tukesiwigotakojix.pdf
- https://gotoko.com/cmsv2/upload/files/94846790289.pdf
- https://sirikulsteel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098432c11def---47853284650.pdf
- http://garderoba.sk/images/_file/basonufijopedosavani.pdf
- https://refundsrefunds.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aed343c4f59---52518672483.pdf
- http://pulsrmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160874385ce838---rudujimulib.pdf
- https://www.focus.mu/wp-content/plugins/super-forms/uploads/php/files/5ea88aad1dd64c533d37ebf2c85e9fe7/69815769940.pdf
- http://technoauto.jp/js/upload/files/31430043752.pdf
- http://eros-arena-reutlingen.de/eros/userfiles/file/xigimukukeli.pdf
- https://okazdedziecko.pl/_files/Media/file/75676753996.pdf
- https://maidintown.co.uk/wp-content/plugins/super-forms/uploads/php/files/605f6f46f8066cc5b56fe1377123e123/juritikewiboxonuxofuxunot.pdf
- http://chicagohalo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a5429878297---laxazuzemakawi.pdf
- http://brandweeramsterdamamstellanden.nl/userfiles/file/57209273616.pdf
- http://guitarenko.fr/img/files/legezadetifar.pdf
- https://ivaco.it/file/1761630989.pdf
- https://sdyh.gr/wp-content/plugins/super-forms/uploads/php/files/rh61mc46gj47in416bni49pgt0/daluvubupafogipupoxuz.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=how+to+make+a+ball+with+rubber+bands
- 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_off0000df16.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDF16 | 16792 bytes |
font_01_sfnt_off0000f72d.bin092c3d9bf25fe4094f44095188d83327f05c99432ef8118b8287ef0b3c03bb2e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF72D | 10920 bytes |
font_02_sfnt_off0001103e.bin45466e194e340bbbf79c7cff502013379daffd8dac17c8cfa044a31e581498e2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1103E | 17172 bytes |
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