MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The file is identified as malicious by ClamAV and an ML classifier, and it contains a significant number of external links, many pointing to disposable domains or potentially malicious sites. The PDF_SEO_LINK_FARM heuristic indicates a large number of links, suggesting an attempt to manipulate search engine results or distribute phishing content. The presence of a URL with a 'utm_term' parameter further supports the idea of a targeted campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9992
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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Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARMSmall PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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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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Urgency / deadline lure low SE_URGENCY_LUREDocument contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
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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://kuzutuzo.ru/strik?utm_term=man+who+can%2527t+stop+hiccupping PDF link annotation
- http://help-feedback-amzn3.xyz/gomumazivem63uvq.pdfIn PDF document text
- http://dipenoguzel.sportsontheweb.net/51378913733.pdfIn PDF document text
- https://cdn.sqhk.co/fumodolanes/hjeXxEV/xekegirovori.pdfIn PDF document text
- http://derifupiwa.mypressonline.com/wobirisekomubetupetobojen.pdfIn PDF document text
- http://pakupuxojopef.getenjoyment.net/pdf_split_and_merge_offline_installer.pdfIn PDF document text
- https://cdn.sqhk.co/wujakegu/giheKah/are_there_cruise_ships_still_stuck_at_sea.pdfIn PDF document text
- https://cdn.sqhk.co/jasurisunav/ejfnjdA/vtech_baby_monitor_phone_app.pdfIn PDF document text
- https://cdn.sqhk.co/kerosumumato/DhimjdK/84786777740.pdfIn PDF document text
- http://texifudosino.mygamesonline.org/transfer_to_word_online_for_free.pdfIn PDF document text
- http://itwow.info/967481418477mi6v.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/9cf5f7b4-cdaa-4d00-b6ef-b73d0dcffb1b/lord_of_the_flies_chapter_10_character_analysis.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/fe099b33-f5dd-488e-bb5d-2b9ddbc055d7/tefuw.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/595846f8-f1b3-48b6-aa85-1a3885ee8e86/steelseries_arctis_3_compatible_with_xbox_one.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/292944e1-5303-45fb-a67b-a70e565aa065/82642681112.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/13dac9d3-e7bc-4e6f-9282-e768ffd8718d/vazepopefipizozeluzarin.pdfIn PDF document text
- https://1cbf0fd9-62af-4102-a3dc-982f361539e7.filesusr.com/ugd/bfbc46_3907eee5cfed4bf7bce4220b07e172f4.pdf?index=trueIn PDF document text
- https://f9c380c0-3c9a-404e-8c76-a924832b335c.filesusr.com/ugd/9c8fb9_ab89d86f669b4e84adc05dc7931a2d3f.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/469b8fc6-eb8d-4323-a7c5-ac1152479b99/frases_libro_inteligencia_emocional_daniel_goleman.pdfIn PDF document text
- https://e39bfc17-a898-4016-ac91-fc9303c112df.filesusr.com/ugd/b5068a_81805f7ec68748809adc1a9749268a5f.pdf?index=trueIn PDF document text
- https://59bb578d-b312-442a-858b-1a1a54b18a6c.filesusr.com/ugd/c79b1c_a01320dca7a64748b15517556cb9efcf.pdf?index=trueIn PDF document text
- https://58960a86-a3f4-42d8-866e-ee2cf32068b1.filesusr.com/ugd/1ad962_9c5eac30e4af439ba8bfb805287f8f58.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/4cec866c-7c74-41b9-8f39-b5d3241ec125/is_room_based_on_a_book.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/9e7ab46a-95a1-4f06-99be-222ec90506ac/35133698940.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://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000103d0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x103D0 | 5200 bytes |
SHA-256: 533c1465613f9aa201b9899bad61a67e5a331af0aad82525672759d339ecdac9 |
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font_01_sfnt_off000115aa.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x115AA | 11028 bytes |
SHA-256: 6c874df891a8c208e1c5adb4f27c2ae3a3d23f130611b37366b42f6e4615f796 |
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