MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a spearphishing attachment designed to redirect users to malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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://infrive.ru/uplcv?utm_term=a+nation%27s+strength+summary+pdf PDF link annotation
- http://geyikkimya.com/userfiles/upload/file/51607387979.pdfIn PDF document text
- http://www.dfdtrading.sk/ckfinder/userfiles/files/24254197292.pdfIn PDF document text
- http://george-dollie-nelson-mass-reunion.com/clients/3/33/33de80a6744892f7217a81a137582dad/File/musar.pdfIn PDF document text
- https://tfnd.org/wp-content/plugins/super-forms/uploads/php/files/5d1e33e1c8cac23f9b4281a1caa378fc/82315181133.pdfIn PDF document text
- http://all4pets.cz/ckfinder/userfiles/files/pavugobamedejitilukuzapem.pdfIn PDF document text
- http://shethof.ch/cgi-bin/dynamisch/file/duzalirojidomazurumolula.pdfIn PDF document text
- https://askopenko.com/wp-content/plugins/super-forms/uploads/php/files/3dabbe17a59cfefd1aa7c23dcd3e0bea/fosojigu.pdfIn PDF document text
- https://christembassybarking.org/wp-content/plugins/super-forms/uploads/php/files/0b6a668451ed83d18339973f16ce4039/36777298544.pdfIn PDF document text
- http://run2endalz.org/clients/2/2b/2b4973775a35d8819257a28a16fdea67/File/19346608.pdfIn PDF document text
- https://serini-cloud.pl/uploads/editor/file/73171794971.pdfIn PDF document text
- http://kolesnikov.pro/ckfinder/userfiles/files/sovizazal.pdfIn PDF document text
- https://agilitynd.com/wp-content/plugins/super-forms/uploads/php/files/d2f620dfe8ce41aa3dd176f27fdb67a3/15752564976.pdfIn PDF document text
- https://mn-lawfirm.com/box/userfiles/file/tawekigatonenilaligogifi.pdfIn PDF document text
- https://aryaayur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a7b1954b12---6284474172.pdfIn PDF document text
- http://dahchen.tw/userfiles/file/72218962023.pdfIn PDF document text
- https://papersacksfactory.ae/images/bulk_images/files/xuweregisatufepapajif.pdfIn PDF document text
- http://chhsclassof70.com/clients/1/1f/1f6d1b94cf555b90b9f410dfa82aea5f/File/fapaxumukovefogalafor.pdfIn PDF document text
- http://terezmisszio.eu/files/file/kowusulivitesa.pdfIn PDF document text
- https://big-cash.de/wp-content/plugins/super-forms/uploads/php/files/2iq5fcls0heodk5lqo2ptvijtc/58091452280.pdfIn PDF document text
- http://blpest.com/UserFiles/file/57544881266.pdfIn PDF document text
- https://pmrmhss.com/userfiles/file/bifaxaluw.pdfIn PDF document text
- http://www.investing-in-women.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609cb9644541c---51287040346.pdfIn PDF document text
- http://nc2e.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160b73c62c38ea---sexapimod.pdfIn PDF document text
- http://lnianemarzenie.pl/userfiles/file/33179875420.pdfIn PDF document text
- http://dgjinhak.kr/DATA/upload/files/202106180551131120.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_off0000fc45.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFC45 | 18692 bytes |
SHA-256: 9ba2045f48a0b360f2a6e589f7efefc83289725b2ec05466ca09157115e5b2a4 |
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font_01_sfnt_off00012cee.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12CEE | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00014505.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14505 | 11128 bytes |
SHA-256: 1a1e6e63b0d0a4c38934730e0a320949945a048695e41d4e48d019977c3e0c45 |
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