MALICIOUS
206
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF file contains a malformed stream and is flagged by ML classifiers and ClamAV as malicious. It functions as a link farm, directing users to external URLs, one of which is identified as malicious. The document body suggests a lure related to educational exercises, likely to trick users into visiting the malicious URL.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
Heuristics 7
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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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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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Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTHA PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
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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://gimoguvi.ru/strik?utm_term=ejercicios+de+movimiento+armonico+simple+resueltos+paso+a+paso+pdf PDF link annotation
- https://gowukamumikezaj.weebly.com/uploads/1/3/4/7/134769013/wipobinizavoxuluj.pdfIn PDF document text
- https://wodelegijulafa.weebly.com/uploads/1/3/4/6/134677223/jugaliraj-bosariz-zujuvapuzowube-tasajewefutijoz.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4387715/normal_601ddb1c23e15.pdfIn PDF document text
- https://lasasozizo.weebly.com/uploads/1/3/4/0/134041343/fewug-lubipanidik-logoniwufu-jewovujovetuvi.pdfIn PDF document text
- https://kenuvibugitevam.weebly.com/uploads/1/3/4/7/134700053/jituxizijidedi.pdfIn PDF document text
- https://guxadudupis.weebly.com/uploads/1/3/4/7/134751999/sibugodudezufemiloli.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4416494/normal_603b39aa11165.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/muxozuvalubi/google_sheet_importrange_sort.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/8963ea8d-99e3-422c-8bf0-f4faee4597e9/do_fleas_need_water.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/c2150cb0-81d8-49b2-89cd-52eb8d5f8d39/beats_solo_3_special_edition_silver.pdfIn PDF document text
- https://s3.amazonaws.com/jitimesolagun/afspa_act.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/2fd97592-83d5-476b-9c78-d17c2e8f9e2d/81494187266.pdfIn PDF document text
- https://s3.amazonaws.com/dorobukasawituw/jordan_canonical_form_of_a_2x2_matrix.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/06d6ff58-e1e6-4bd1-a718-2d285c381c24/the_birds_and_the_bees_song_breathe_carolina.pdfIn PDF document text
- https://s3.amazonaws.com/mogedozara/how_to_say_mother_trucker_in_spanish.pdfIn PDF document text
- https://s3.amazonaws.com/fekazudabo/xozukiparuxip.pdfIn PDF document text
- https://s3.amazonaws.com/jalasilunaz/southern_baptist_vs_reformed_baptist.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e0f63663-cf5f-49d1-90be-ce8263995534/algebra_1_eoc_practice_test.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/d1aa2b39-09e7-47de-a9fe-7ef3a2f2b47a/selokobosez.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/91fb6e19-2c54-4133-bbe9-45cfdeefc097/quadratic_equation_definition_with_example.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_off0000f6ca.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF6CA | 5392 bytes |
SHA-256: 4fd2179de07cd7c920584a6a14cdc1cbb883af1c396dfb7766a2d81bb8de1054 |
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font_01_sfnt_off0001091c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1091C | 11080 bytes |
SHA-256: ae1a6b67ae862f1e2c64da26c984932404e38b3cf0fc03da50d7d7abcc058f2f |
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