MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains a large number of external links, identified as a link farm. The primary purpose appears to be directing users to potentially malicious websites, as indicated by heuristics like PDF_SEO_LINK_FARM and PDF_SEO_DISPOSABLE_LINK_FARM. The ML classifier also strongly flagged this PDF as malicious. The embedded URLs are the highest priority IOCs for further investigation.
Machine Learning
- Nyx PDF Classifier malicious score 0.9996
Heuristics 5
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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://lozipotod.ru/123?utm_term=kingsoft+spreadsheets+2013+%25E5%258D%25B0%25E5%2588%25B7%25E7%25AF%2584%25E5%259B%25B2 PDF link annotation
- https://xakivemo.weebly.com/uploads/1/3/0/7/130739368/wemalig_vevemazovipidem.pdfIn PDF document text
- https://cdn.sqhk.co/xemugugafot/gfha8jc/jovikefegaxokinisot.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4368768/normal_5ff763e76066b.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4502464/normal_5ff1e7667eddd.pdfIn PDF document text
- https://cdn.sqhk.co/sobexofap/hha9Y2O/robejodiwepatipujemeno.pdfIn PDF document text
- https://denafeferigo.weebly.com/uploads/1/3/0/8/130874231/1263122.pdfIn PDF document text
- https://cdn.sqhk.co/xilelawemu/iRRQjfA/world_war_two_propaganda_posters_uk.pdfIn PDF document text
- http://sarerokedatijaw.22web.org/6120508980.pdfIn PDF document text
- https://fipamowusaki.weebly.com/uploads/1/3/4/8/134879766/b256de3d.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://6bfd3344-23d3-4e03-ab7d-00c1c23eecf6.filesusr.com/ugd/be19e1_f4190f3ebe7c4ab19ccdfe7e9067aea1.pdf?index=trueIn PDF document text
- https://d21da297-2d1c-4020-882f-059d99c29dc9.filesusr.com/ugd/3724a2_e4965ceef4164a6aba93fbc17b4321f1.pdf?index=trueIn PDF document text
- http://gepaboveron.epizy.com/social_contract_rousseau_main_ideas.pdfIn PDF document text
- http://dofumuligo.rf.gd/ti_86_vs_ti_84_plus.pdfIn PDF document text
- https://cd753cf5-d90a-4073-9c55-931a76e81761.filesusr.com/ugd/8826df_f716d610b9c54163a4aaab05a83e0ccc.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/nonabafat/bsc_zoology_books_free_in_tamil.pdfIn PDF document text
- https://s3.amazonaws.com/norozovijalu/naziwevanozadovapad.pdfIn PDF document text
- https://s3.amazonaws.com/saziwijaxodav/bharathiyar_song_in_tamil.pdfIn PDF document text
- https://9526c93a-d340-4dca-b5fd-2864ff0888c4.filesusr.com/ugd/4c3d6a_4e9e770e8d4e4629b09cdebb14973f0d.pdf?index=trueIn PDF document text
- http://dupuwaxazerebov.epizy.com/electronic_waste_management.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000d241.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD241 | 3920 bytes |
SHA-256: 8573f09e770b3449e7b1b0895ce3314d7fdb5cba6e90cdc73ddb435ac3f956c5 |
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font_01_sfnt_off0000dffe.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDFFE | 5732 bytes |
SHA-256: 4d6371879c5f93c1f2b407961dd0761b0fa61f708bb1d9c7c40bf209d3c940f0 |
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font_02_sfnt_off0000f38d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF38D | 10568 bytes |
SHA-256: 47951335f395dfa128212a5573845c1db294b4630183c11d0b69352229eab4e9 |
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font_03_sfnt_off00011803.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11803 | 16132 bytes |
SHA-256: ca0bb856d51d4c440eb4e48db524e4b4a87bf80294704eab3ae97752e74326e1 |
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