MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample is a PDF file identified as malicious by ClamAV and an ML classifier. It contains a large number of external links, many pointing to disposable hosting, suggesting a link farm or SEO manipulation tactic. The primary purpose appears to be directing users to a network of other PDF files, potentially for distributing malware or phishing content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9995
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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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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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://golowaki.ru/award?keyword=printable+calendar+pdf+free PDF link annotation
- http://rodina38.ru/band_vaaje_mp3_songs_free_downloadnt0rm.pdfIn PDF document text
- http://rekijiwowak.scienceontheweb.net/79317833032.pdfIn PDF document text
- https://nizevamil.weebly.com/uploads/1/3/2/8/132814567/7e7a53fe69c8f.pdfIn PDF document text
- https://joletumutete.weebly.com/uploads/1/3/4/8/134871701/3302562.pdfIn PDF document text
- http://nenegifivujaxu.mypressonline.com/92052098116.pdfIn PDF document text
- https://xoxigukot.weebly.com/uploads/1/3/4/8/134861038/2874dc7.pdfIn PDF document text
- https://duketexu.weebly.com/uploads/1/3/4/7/134725944/revefibajavafoful.pdfIn PDF document text
- https://pirivelel.weebly.com/uploads/1/3/4/5/134505874/e2678.pdfIn PDF document text
- http://deutschebank-meine.com/echo_cs_400_chain78dvv.pdfIn PDF document text
- http://ig-about.net/what_is_computational_thinking_skillshcfo0.pdfIn PDF document text
- http://free-at.pro/gauge_pressure_vs_absolute_pressureya7h7.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://87c8fc71-818b-4167-bf0d-2ac3bc49ffd1.filesusr.com/ugd/f9d4cd_7f514ea9a4f440529b22571619a3ec3b.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/1b4e4dff-e57c-4c0c-b0da-9dcf0d7e24bf/philips_tv_code.pdfIn PDF document text
- https://8d6920c1-aef5-45ed-b1a0-e693d63948fb.filesusr.com/ugd/0a593f_cc559be7e0214b66aa9cdb54a9ee18d4.pdf?index=trueIn PDF document text
- http://mizuselafu.rf.gd/who_is_the_girl_in_the_crown_season_3_episode_4.pdfIn PDF document text
- http://sevetise.rf.gd/balao_da_informatica_em_sao_carlos.pdfIn PDF document text
- https://9e2bb560-353e-4f5d-a08b-1363560edab4.filesusr.com/ugd/6c032c_5a96cee517d34c3ab00ccae71cc8b7df.pdf?index=trueIn PDF document text
- https://aca56392-15ae-48e8-982c-fdf6c4ac0dc3.filesusr.com/ugd/00c070_1d1ff15d451b4eb9a95daac3c79b5d38.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/60d65dfa-b077-43dd-9fdf-cdbe0114f266/brother_mfc_7340_driver.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b9a4a556-6a3f-4c76-a779-878b6c16e810/scooters_repair_paris.pdfIn PDF document text
- https://36071b1a-d853-4ad1-bccf-0ed894d94038.filesusr.com/ugd/906e9f_8fd824aff7a14f9eae479c51cba19c13.pdf?index=trueIn PDF document text
- http://tasibufoz.rf.gd/vusamiwi.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_off0000d943.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD943 | 5112 bytes |
SHA-256: 9252515718fe15c4659702c8f8d2e12394632b948deee75f1113018c8ccec0df |
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font_01_sfnt_off0000eaae.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEAAE | 10336 bytes |
SHA-256: 3ba365c61390f9b34d9d4a99d5e7008bd84a26b383f01a63799bc888d7b3f71d |
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