MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by ML classifiers and ClamAV as malicious, indicating it is likely a phishing or trojan distribution attempt. The document contains numerous links to external websites, many hosted on compromised or disposable domains, suggesting a link farm designed to redirect users to malicious content. No scripts were extracted, but the presence of numerous URLs and the nature of the heuristics point towards a phishing or malware distribution campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
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://archism.ru/uplcv?utm_term=veterans+day+worksheets+elementary+pdf PDF link annotation
- http://sgyscom.com/upload_fck/file/2021-9-2/20210902150208804674.pdfIn PDF document text
- https://trompis-tondschungel.de/userfiles/file/48053220370.pdfIn PDF document text
- http://sumosushingrill.com/uploads/files/31537277688.pdfIn PDF document text
- https://globalcareerclub.com/FCKeditor/userfiles/file/sejuzu.pdfIn PDF document text
- http://a899.net/userfiles/file/46054519697.pdfIn PDF document text
- http://allier.proximeo.com/ckfinder/userfiles/files/ruworixukajomikusupilodu.pdfIn PDF document text
- https://harpethvalleyhealth.com/wp-content/plugins/super-forms/uploads/php/files/c07eb5b44407f4f084a9ca947c92e35a/37160878487.pdfIn PDF document text
- https://rachelrom.com/rescontent/file/71244439686.pdfIn PDF document text
- https://mtestbd.com/assets/uploads/files/figopirejadikisezilaxo.pdfIn PDF document text
- http://in-dapt.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f0968c6d10---bamilaloka.pdfIn PDF document text
- https://kp-bs.ru/upload/files/ruzovatusadoliruxatusa.pdfIn PDF document text
- http://pololanna.com/user_img/files/dizeromupopalonidugozule.pdfIn PDF document text
- http://agama-rc.com/upload/files/1332216309.pdfIn PDF document text
- http://lempreintedubois.fr/userfiles/lempreintedubois.fr/file/22028802568.pdfIn PDF document text
- http://hotelrealerimini.it/userfiles/files/32221651245.pdfIn PDF document text
- https://machnhaduong.com/images/uploads/files/87790994505.pdfIn PDF document text
- https://accu-split.com/userfiles/files/57889606443.pdfIn PDF document text
- http://thepokewave.com/uploads/files/xuxiteb.pdfIn PDF document text
- http://versobrokers.eu/userfiles/files/26599909319.pdfIn PDF document text
- http://kaies.net/upfiles/file/zaninikuxakomilibegizax.pdfIn PDF document text
- https://srldirect.com/ckfinder/userfiles/files/mivodokew.pdfIn PDF document text
- http://www.advancedevents.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1612f8b602c5d8---zasafoxokabefiro.pdfIn PDF document text
- http://startent.ru/SITE/files/editor/file/gebonuwutobaxisur.pdfIn PDF document text
- https://0286869143.com/editor_images/files/63111987450.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000ee39.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEE39 | 18284 bytes |
SHA-256: e8fbff47860b71115b22a55d1d90a629b1b8a1dd36d88cb933f3324b9ceea057 |
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font_01_sfnt_off00011e23.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11E23 | 10932 bytes |
SHA-256: b6decc135910b0bfafa5ac13dfd5294737d6520cf98c8418053059f588ba4621 |
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font_02_sfnt_off00013762.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13762 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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