MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file contains a link farm with numerous external URLs, many pointing to disposable hosting, designed to direct users to download APKs. The heuristic PDF_SEO_LINK_FARM and PDF_SEO_DISPOSABLE_LINK_FARM indicate a malicious intent to distribute potentially harmful software. The ML classifier and ClamAV detection further confirm the malicious nature of this PDF.
Machine Learning
- Nyx PDF Classifier malicious score 0.9990
Heuristics 6
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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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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 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://resalured.ru/wix?keyword=blackmart+alpha+apk+download+2018
- https://cdn-cms.f-static.net/uploads/4420600/normal_60233963e8296.pdf
- https://cdn.sqhk.co/ruxebiseso/ibvOggg/56045447932.pdf
- https://static.s123-cdn-static.com/uploads/4502721/normal_5ff1737e45b33.pdf
- http://mudikovarew.mygamesonline.org/22592746663.pdf
- https://cdn-cms.f-static.net/uploads/4415052/normal_5fea38e396f40.pdf
- https://cdn-cms.f-static.net/uploads/4494160/normal_6021a2604b55d.pdf
- https://cdn-cms.f-static.net/uploads/4444110/normal_6012284db1733.pdf
- https://cdn.sqhk.co/belexewuwif/ihYLJhg/bumblebee_transformer_cardboard_costume.pdf
- http://ziwigosopijulal.mygamesonline.org/68313616369.pdf
- http://wulixiv.sportsontheweb.net/28592289758.pdf
- http://ripugusulufiluj.getenjoyment.net/jerogesul.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://www.daltonmaag.com/
- https://2080fafa-2491-4ac3-8118-a138f33bff34.filesusr.com/ugd/822ecd_28c726bc889b454182c145ff773090e0.pdf?index=true
- http://femagela.myartsonline.com/68189950408.pdf
- https://4f65703b-d4c0-4c9c-9e30-73c8cc83ec5d.filesusr.com/ugd/54fa57_d999dd01a11b4045800b2c0d5bc9c404.pdf?index=true
- https://d1897088-ef6e-4b60-8303-910b4b551fc1.filesusr.com/ugd/4cfbbd_d3cd866e834e47cbae90945f6a66b179.pdf?index=true
- https://uploads.strikinglycdn.com/files/551ff26d-e727-4a38-a901-cce8114bbfa0/pezamegu.pdf
- https://75a697d3-84f0-44cf-bab9-f05e37020c50.filesusr.com/ugd/7c3584_8bd71ecf0c0b4d6a8cb9597222898ae0.pdf?index=true
- https://23da7c74-6e14-424a-b22a-901aa35eafb1.filesusr.com/ugd/9cc572_3d9349dd291c48e59f4295a94b6f63fb.pdf?index=true
- https://uploads.strikinglycdn.com/files/63ec2aba-85d9-4ea7-867b-d211bc9978c8/wumuze.pdf
- https://538d8494-0c7d-401a-b890-0485f6bc7bca.filesusr.com/ugd/29c71c_fb42b9a29f0a4e649929de6849f12fbb.pdf?index=true
- https://uploads.strikinglycdn.com/files/6c85663f-4a47-4f08-956a-4535b76cb822/xazuberodaguwasovuf.pdf
- https://6ec3981f-6443-463b-a164-91fc69f101d9.filesusr.com/ugd/7603ae_d9afcf0ca7294fcaa0386cc818235266.pdf?index=true
- https://e29a9437-b0a5-48a6-9afa-908397ce514a.filesusr.com/ugd/16a9c1_e062c6152c514647ae860d8614c162ad.pdf?index=true
- https://45ae50e1-98a8-4501-9ad6-fc0df438eb43.filesusr.com/ugd/b16523_35fec0b64ce04be28f63dc66031fd302.pdf?index=true
- https://uploads.strikinglycdn.com/files/86450764-4dc6-40ea-88a0-1416434c2e0a/sas_interview_questions.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://scripts.sil.org/OFL
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000fb9a.bin6f60253c2f4fd4af40a7e328a04fb22beb5baf7182e2c91cc5d5f4b8f2b80b7c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFB9A | 5484 bytes |
font_01_sfnt_off00010e24.bin982eab6624d71025864963957954b3b0bc61e37f3110e05d3902bfe056a418e9 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10E24 | 10952 bytes |
font_02_sfnt_off00013362.bin7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13362 | 4324 bytes |
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