MALICIOUS
246
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.001 User Execution: Malicious Link
This PDF file was identified as malicious by multiple heuristics, including a critical finding for brand-impersonation credential phishing (Gmail). It contains a link farm with numerous external URLs, many hosted on disposable domains, suggesting a phishing campaign. The primary lure appears to be a link to 'https://serarabasujuz.weebly.com/uploads/1/3/1/6/131606617/4284c2.pdf', which is presented as a way to learn about artificial intelligence but is likely a redirector for malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
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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Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISHDocument impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://serarabasujuz.weebly.com/uploads/1/3/1/6/131606617/4284c2.pdf.
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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://kuzutuzo.ru/aws?utm_term=how+to+start+learning+artificial+intelligence PDF link annotation
- https://serarabasujuz.weebly.com/uploads/1/3/1/6/131606617/4284c2.pdfIn PDF document text
- http://sweetygirl.club/inc_and_grow_rich_reviewvlry7.pdfIn PDF document text
- http://gbarb.me/31429098104b50ng.pdfIn PDF document text
- https://foxidaxoluw.weebly.com/uploads/1/3/4/0/134016742/9914852.pdfIn PDF document text
- http://9gusevshop.website/iihf_world_hockey_championship_power_rankings35t3h.pdfIn PDF document text
- https://kanogerigan.weebly.com/uploads/1/3/4/6/134657300/zotudaxam.pdfIn PDF document text
- https://nudilosi.weebly.com/uploads/1/3/4/5/134527742/texiwokabomise.pdfIn PDF document text
- http://artemk.ru/23485888901rgyav.pdfIn PDF document text
- http://bonboxstudio.com/rejirox6qzq.pdfIn PDF document text
- https://tatunonomufobuf.weebly.com/uploads/1/3/4/3/134355176/a9baeb57ab.pdfIn PDF document text
- http://tekplafond.xyz/74861332982y9w2g.pdfIn PDF document text
- https://dugegedop.weebly.com/uploads/1/3/4/3/134338267/kanamiwiruribaxava.pdfIn PDF document text
- http://iuts.space/xiluxuwupawanv8tk0.pdfIn PDF document text
- https://tevupiju.weebly.com/uploads/1/3/4/8/134865653/ketugazu.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/risalenefazozo/82880185094.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/ebe4537b-24ba-46be-a685-c17b2fbf9637/14977843008.pdfIn PDF document text
- https://s3.amazonaws.com/jajoxulabojaso/rirogesifukoju.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/c8609789-86a4-4812-abdf-ea0ab4b9c123/gabriels_rapture_part_2_release_date.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b01fd5ee-c7bf-47ed-8206-cc5e9ba0cc9c/84896731127.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/2586694b-4748-4fd9-9f91-d858f6bf74c0/74196470497.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_off0000ee40.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEE40 | 5104 bytes |
SHA-256: 9cf67907da954b5ed83794efbc5ee54e03a0138577667f25555e0b25bfbda202 |
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font_01_sfnt_off0000ffbd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFFBD | 10304 bytes |
SHA-256: fee59359ee23527083bee99be73095888263e04f50cd2b1c6266331c90f872db |
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